25488564 has 24 divisors (see below), whose sum is σ = 61524960. Its totient is φ = 8203104.

The previous prime is 25488521. The next prime is 25488581. The reversal of 25488564 is 46588452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36274 + ... + 36969.

It is an arithmetic number, because the mean of its divisors is an integer number (2563540).

Almost surely, 2^25488564 is an apocalyptic number.

It is an amenable number.

25488564 is an abundant number, since it is smaller than the sum of its proper divisors (36036396).

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

25488564 is a wasteful number, since it uses less digits than its factorization.

25488564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73279 (or 73277 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 25488564 is about 5048.6200094679. The cubic root of 25488564 is about 294.2942585798.

The spelling of 25488564 in words is "twenty-five million, four hundred eighty-eight thousand, five hundred sixty-four".