79979636925 has 120 divisors (see below), whose sum is σ = 165122020800. Its totient is φ = 38033349120.

The previous prime is 79979636921. The next prime is 79979636939. The reversal of 79979636925 is 52963697997.

79979636925 is a `hidden beast` number, since 79 + 97 + 96 + 369 + 25 = 666.

It is not a de Polignac number, because 79979636925 - 2² = 79979636921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79979636921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 592936 + ... + 715214.

It is an arithmetic number, because the mean of its divisors is an integer number (1376016840).

Almost surely, 2^79979636925 is an apocalyptic number.

79979636925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79979636925 is an abundant number, since it is smaller than the sum of its proper divisors (85142383875).

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

79979636925 is a wasteful number, since it uses less digits than its factorization.

79979636925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122337 (or 122323 counting only the distinct ones).

The product of its digits is 347208120, while the sum is 72.

The spelling of 79979636925 in words is "seventy-nine billion, nine hundred seventy-nine million, six hundred thirty-six thousand, nine hundred twenty-five".