25890712992 has 72 divisors (see below), whose sum is σ = 76353653376. Its totient is φ = 8630235072.

The previous prime is 25890712949. The next prime is 25890713081. The reversal of 25890712992 is 29921709852.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1657008 + ... + 1672559.

It is an arithmetic number, because the mean of its divisors is an integer number (1060467408).

Almost surely, 2^25890712992 is an apocalyptic number.

It is an amenable number.

25890712992 is an abundant number, since it is smaller than the sum of its proper divisors (50462940384).

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

25890712992 is an equidigital number, since it uses as much as digits as its factorization.

25890712992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329592 (or 3329572 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 25890712992 in words is "twenty-five billion, eight hundred ninety million, seven hundred twelve thousand, nine hundred ninety-two".