25604325 has 18 divisors (see below), whose sum is σ = 45860594. Its totient is φ = 13655520.

The previous prime is 25604297. The next prime is 25604389. The reversal of 25604325 is 52340652.

25604325 is a `hidden beast` number, since 25 + 604 + 32 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 263169 + 25341156 = 513^2 + 5034^2 .

It is not a de Polignac number, because 25604325 - 2⁷ = 25604197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56674 + ... + 57123.

Almost surely, 2^25604325 is an apocalyptic number.

25604325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25604325 is a deficient number, since it is larger than the sum of its proper divisors (20256269).

25604325 is a wasteful number, since it uses less digits than its factorization.

25604325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113813 (or 113805 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 25604325 is about 5060.0716398091. The cubic root of 25604325 is about 294.7391162860.

Adding to 25604325 its reverse (52340652), we get a palindrome (77944977).

The spelling of 25604325 in words is "twenty-five million, six hundred four thousand, three hundred twenty-five".