25890131892 has 24 divisors (see below), whose sum is σ = 60470927776. Its totient is φ = 8621383968.

The previous prime is 25890131879. The next prime is 25890131903. The reversal of 25890131892 is 29813109852.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 1070038 + ... + 1093965.

Almost surely, 2^25890131892 is an apocalyptic number.

It is an amenable number.

25890131892 is an abundant number, since it is smaller than the sum of its proper divisors (34580795884).

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

25890131892 is a wasteful number, since it uses less digits than its factorization.

25890131892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165007 (or 2165005 counting only the distinct ones).

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

The spelling of 25890131892 in words is "twenty-five billion, eight hundred ninety million, one hundred thirty-one thousand, eight hundred ninety-two".