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Number 25 (twenty-five) is an odd two-digits composite number and natural number following 24 and preceding 26.

Properties of the number 25

Number of digits2
Sum of digits7
Product of digits10
Number parityOdd
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Prime Factorization of 25

Prime factorization5 x 5
Prime factorization in exponent form52
Prime factors5
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)2
Sum of prime factors5
Product of prime factors5
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Divisors of 25

List of proper divisors 1, 5
List of all dividers1, 5, 25
Number of divisors d(n)3
Sum of all divisors σ(n)31
Aliquot sum 6
25 is a deficient number , since it is larger than the sum of its proper divisors (6). Its deficiency is 19.
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Prime numbers

Is 25 a prime number?No
Is 25 a semiprime number?Yes
Is 25 a Chen prime number?No
Is 25 a Mersenne prime number?No
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Is 25 a Catalan number?No
Is 25 a Fibonacci number?No
Is 25 a Idoneal number?Yes: I18
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
25 is not a Happy number
25 is a Humble number
25 is not a Münchhausen number
25 is not a Perfect number
25 is a Perfect square
25 is not a Palindrome
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Numeric Bases of 25

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 25 (n2)625
Cube of 25 (n3)15625
Square root of 255
Natural Logarithm (ln) of 253.2188758248682
Decimal Logarithm (log) of 251.397940008672
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Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 25-0.13235175009777
Cosecant of 25-7.5556235505859
Cosine of 250.99120281186347
Secant of 251.008875265517
Tangent of 25-0.13352640702154
Cotangent of 25-7.4891553087227
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Number parity

Parity is the property of an integer of whether it is even or odd.

Is 25 an Even Number?


Is 25 an Odd Number?

Yes, the number 25 is an odd number.
Total number of all odd numbers from 1 to 25 is 13
Sum of all the odd numbers from 1 to 25 are 169
The sum of all odd numbers is a perfect square: 169 = 13
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
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Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
The spelling of 25 in words is "twenty-five", meaning that:
25 is an aban number (a number without the letter a)
25 is not an eban number (as it contains the letter e)
25 is not an iban number (as it contains the letter i)
25 is an oban number (a number without the letter o)
25 is not a tban number (as it contains the letter t)
25 is an uban number (a number without the letter u)
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Numeral systems

How to write 25 in other number systems?
Bengali numerals২৫
Eastern Arabic numerals٢٥
Hieroglyphs numeralsused in Ancient Egypt𓎇𓏾
Khmer numerals២៥
Japanese numerals二十五
Roman numeralsXXV
Thai numerals๒๕
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How do you say 25 in 38 different languages?
Arabicخمسة و عشرون
Croatiandvadeset i pet
Czechdvacet pět
Danish fem og tyve
Estonianblaeve vɔ atɔ̃
Filipinodalawáng pû’t limá
Greekείκοσι πέντε
Hebrewעשרים וחמש
Icelandictuttugu og fimm
Indonesiandua puluh lima
Latviandivdesmit pieci
Lithuaniandvidešimt penki
Persianبیست و پنج
Polishdwadzieścia pięć
Portuguesevinte e cinco
Romaniandouăzeci şi cinci
Russianдвадцать пять
Serbianдвадесет и пет
Slovenedvaset pet
Spanish veinticinco
Swahiliishirini na tano
Turkishyirmi beş
Ukrainianдвадцять пʼять
Vietnamesehai mươi lăm
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Number 25 reversed52
ASCII Code25
Unicode CharacterU+0019
Unix TimestampThu, 01 Jan 1970 00:00:25 +0000
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