25990006188 has 24 divisors (see below), whose sum is σ = 60649750000. Its totient is φ = 8662420800.

The previous prime is 25990006157. The next prime is 25990006213. The reversal of 25990006188 is 88160009952.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9438 + ... + 228186.

Almost surely, 2^25990006188 is an apocalyptic number.

It is an amenable number.

25990006188 is an abundant number, since it is smaller than the sum of its proper divisors (34659743812).

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

25990006188 is a wasteful number, since it uses less digits than its factorization.

25990006188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228657 (or 228655 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 25990006188 in words is "twenty-five billion, nine hundred ninety million, six thousand, one hundred eighty-eight".