25122759992 has 32 divisors (see below), whose sum is σ = 51393674880. Its totient is φ = 11418056160.

The previous prime is 25122759983. The next prime is 25122759997. The reversal of 25122759992 is 29995722152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25122759997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200773 + ... + 1221515.

It is an arithmetic number, because the mean of its divisors is an integer number (1606052340).

Almost surely, 2^25122759992 is an apocalyptic number.

25122759992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25122759992 is an abundant number, since it is smaller than the sum of its proper divisors (26270914888).

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

25122759992 is a wasteful number, since it uses less digits than its factorization.

25122759992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34523 (or 34519 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 53.

The spelling of 25122759992 in words is "twenty-five billion, one hundred twenty-two million, seven hundred fifty-nine thousand, nine hundred ninety-two".