25634536 has 24 divisors (see below), whose sum is σ = 49236930. Its totient is φ = 12511968.

The previous prime is 25634533. The next prime is 25634549. The reversal of 25634536 is 63543652.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 3261636 = 4730^2 + 1806^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25634533) 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, 13926 + ... + 15658.

Almost surely, 2^25634536 is an apocalyptic number.

It is an amenable number.

25634536 is a deficient number, since it is larger than the sum of its proper divisors (23602394).

25634536 is a wasteful number, since it uses less digits than its factorization.

25634536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1778 counting only the distinct ones).

The product of its digits is 64800, while the sum is 34.

The square root of 25634536 is about 5063.0559941600. The cubic root of 25634536 is about 294.8549933706.

The spelling of 25634536 in words is "twenty-five million, six hundred thirty-four thousand, five hundred thirty-six".