25287264 has 36 divisors (see below), whose sum is σ = 71911476. Its totient is φ = 8428992.

The previous prime is 25287247. The next prime is 25287287. The reversal of 25287264 is 46278252.

25287264 is a `hidden beast` number, since 2 + 528 + 72 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43614 + ... + 44189.

It is an arithmetic number, because the mean of its divisors is an integer number (1997541).

Almost surely, 2^25287264 is an apocalyptic number.

25287264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25287264 is an abundant number, since it is smaller than the sum of its proper divisors (46624212).

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

25287264 is a wasteful number, since it uses less digits than its factorization.

25287264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87819 (or 87808 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 25287264 is about 5028.6443501206. The cubic root of 25287264 is about 293.5174647417.

The spelling of 25287264 in words is "twenty-five million, two hundred eighty-seven thousand, two hundred sixty-four".