25488816 has 20 divisors (see below), whose sum is σ = 65846232. Its totient is φ = 8496256.

The previous prime is 25488803. The next prime is 25488833. The reversal of 25488816 is 61888452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265461 + ... + 265556.

Almost surely, 2^25488816 is an apocalyptic number.

It is an amenable number.

25488816 is an abundant number, since it is smaller than the sum of its proper divisors (40357416).

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

25488816 is a wasteful number, since it uses less digits than its factorization.

25488816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531028 (or 531022 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 25488816 is about 5048.6449667213. The cubic root of 25488816 is about 294.2952284515.

The spelling of 25488816 in words is "twenty-five million, four hundred eighty-eight thousand, eight hundred sixteen".