25 (number)

← 24 25 26 →
← 20 21 22 23 24 25 26 27 28 29 → List of numbers Integers ← 0 10 20 30 40 50 60 70 80 90 →
Cardinal	twenty-five
Ordinal	25th (twenty-fifth)
Factorization	52
Divisors	1, 5, 25
Greek numeral	ΚΕ´
Roman numeral	XXV, xxv
Binary	110012
Ternary	2213
Senary	416
Octal	318
Duodecimal	2112
Hexadecimal	1916

25 (twenty-five) is the natural number following 24 and preceding 26. 25 is odd number, which according to Merriam Webster Dictionary is defined as "a whole number that is not able to be divided by two into two equal whole numbers".

In mathematics

25 is a square.

It is a square number, being 5². 25 is also the smallest square that is also a sum of two nonzero squares: $25=3^{2}+4^{2}$. In other words, the numbers 3, 4 and 5 form the smallest Pythagorean triple.

In religion

• In Ezekiel's vision of a new temple: The number twenty-five is of cardinal importance in Ezekiel's Temple Vision (in the Bible, Ezekiel chapters 40–48).

In sports

• In baseball, the number 25 is typically reserved for the best slugger on the team. Examples include Mark McGwire, Barry Bonds, Jim Thome, and Mark Teixeira.

In other fields

Twenty-five is:

• The number of years of marriage marked in a silver wedding anniversary.