25663264 has 24 divisors (see below), whose sum is σ = 55118448. Its totient is φ = 11664960.

The previous prime is 25663247. The next prime is 25663273. The reversal of 25663264 is 46236652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36102 + ... + 36805.

It is an arithmetic number, because the mean of its divisors is an integer number (2296602).

Almost surely, 2^25663264 is an apocalyptic number.

It is an amenable number.

25663264 is an abundant number, since it is smaller than the sum of its proper divisors (29455184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25663264 is a wasteful number, since it uses less digits than its factorization.

25663264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72928 (or 72920 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

The square root of 25663264 is about 5065.8922215144. The cubic root of 25663264 is about 294.9650978530.

The spelling of 25663264 in words is "twenty-five million, six hundred sixty-three thousand, two hundred sixty-four".