25128888 has 32 divisors (see below), whose sum is σ = 63711360. Its totient is φ = 8257760.

The previous prime is 25128881. The next prime is 25128911. The reversal of 25128888 is 88882152.

It is a super-2 number, since 2×25128888² = 1262922024233088, which contains 22 as substring.

25128888 is a modest number, since divided by 8888 gives 2512 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25128881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5670 + ... + 9077.

It is an arithmetic number, because the mean of its divisors is an integer number (1990980).

Almost surely, 2^25128888 is an apocalyptic number.

It is an amenable number.

25128888 is an abundant number, since it is smaller than the sum of its proper divisors (38582472).

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

25128888 is a wasteful number, since it uses less digits than its factorization.

25128888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14827 (or 14823 counting only the distinct ones).

The product of its digits is 81920, while the sum is 42.

The square root of 25128888 is about 5012.8722305680. The cubic root of 25128888 is about 292.9034071438.

The spelling of 25128888 in words is "twenty-five million, one hundred twenty-eight thousand, eight hundred eighty-eight".