25051328988 has 72 divisors (see below), whose sum is σ = 68018653584. Its totient is φ = 7155187200.

The previous prime is 25051328971. The next prime is 25051329077. The reversal of 25051328988 is 88982315052.

It is a self number, because there is not a number n which added to its sum of digits gives 25051328988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2677198 + ... + 2686538.

It is an arithmetic number, because the mean of its divisors is an integer number (944703522).

Almost surely, 2^25051328988 is an apocalyptic number.

25051328988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25051328988 is an abundant number, since it is smaller than the sum of its proper divisors (42967324596).

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

25051328988 is a wasteful number, since it uses less digits than its factorization.

25051328988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13923 (or 13914 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 25051328988 in words is "twenty-five billion, fifty-one million, three hundred twenty-eight thousand, nine hundred eighty-eight".