25225 has 6 divisors (see below), whose sum is σ = 31310. Its totient is φ = 20160.

The previous prime is 25219. The next prime is 25229. The reversal of 25225 is 52252.

25225 is nontrivially palindromic in base 4 and base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 576 + 24649 = 24^2 + 157^2 .

It is not a de Polignac number, because 25225 - 2⁷ = 25097 is a prime.

25225 is a modest number, since divided by 225 gives 25 as remainder.

25225 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 25199 and 25208.

It is not an unprimeable number, because it can be changed into a prime (25229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 480 + ... + 529.

2²⁵²²⁵ is an apocalyptic number.

25225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25225 is a deficient number, since it is larger than the sum of its proper divisors (6085).

25225 is a wasteful number, since it uses less digits than its factorization.

25225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1014 counting only the distinct ones).

The product of its digits is 200, while the sum is 16.

The square root of 25225 is about 158.8238017427. The cubic root of 25225 is about 29.3276360606.

Adding to 25225 its product of digits (200), we get a triangular number (25425 = T₂₂₅).

Adding to 25225 its reverse (52252), we get a palindrome (77477).

It can be divided in two parts, 25 and 225, that multiplied together give a square (5625 = 75²).

The spelling of 25225 in words is "twenty-five thousand, two hundred twenty-five".