25691892879068 has 48 divisors (see below), whose sum is σ = 51803259275040. Its totient is φ = 11049543072000.

The previous prime is 25691892879061. The next prime is 25691892879077. The reversal of 25691892879068 is 86097829819652.

It is a junction number, because it is equal to n+sod(n) for n = 25691892878983 and 25691892879001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25691892879061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213086783 + ... + 213207318.

It is an arithmetic number, because the mean of its divisors is an integer number (1079234568230).

Almost surely, 2^{25691892879068} is an apocalyptic number.

It is an amenable number.

25691892879068 is an abundant number, since it is smaller than the sum of its proper divisors (26111366395972).

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

25691892879068 is a wasteful number, since it uses less digits than its factorization.

25691892879068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426294198 (or 426294196 counting only the distinct ones).

The product of its (nonzero) digits is 1881169920, while the sum is 80.

The spelling of 25691892879068 in words is "twenty-five trillion, six hundred ninety-one billion, eight hundred ninety-two million, eight hundred seventy-nine thousand, sixty-eight".