25128988 has 12 divisors (see below), whose sum is σ = 44047080. Its totient is φ = 12544112.

The previous prime is 25128977. The next prime is 25128989. The reversal of 25128988 is 88982152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25128989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131 + ... + 7402.

It is an arithmetic number, because the mean of its divisors is an integer number (3670590).

Almost surely, 2^25128988 is an apocalyptic number.

It is an amenable number.

25128988 is a deficient number, since it is larger than the sum of its proper divisors (18918092).

25128988 is a wasteful number, since it uses less digits than its factorization.

25128988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196 (or 10194 counting only the distinct ones).

The product of its digits is 92160, while the sum is 43.

The square root of 25128988 is about 5012.8822048797. The cubic root of 25128988 is about 292.9037956781.

The spelling of 25128988 in words is "twenty-five million, one hundred twenty-eight thousand, nine hundred eighty-eight".