25528336008 has 128 divisors (see below), whose sum is σ = 81293414400. Its totient is φ = 6503445504.

The previous prime is 25528336007. The next prime is 25528336013. The reversal of 25528336008 is 80063382552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25528336007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180960 + ... + 289487.

It is an arithmetic number, because the mean of its divisors is an integer number (635104800).

Almost surely, 2^25528336008 is an apocalyptic number.

25528336008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25528336008 is an abundant number, since it is smaller than the sum of its proper divisors (55765078392).

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

25528336008 is a wasteful number, since it uses less digits than its factorization.

25528336008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470499 (or 470495 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 25528336008 in words is "twenty-five billion, five hundred twenty-eight million, three hundred thirty-six thousand, eight".