79285512125 has 8 divisors (see below), whose sum is σ = 98948319288. Its totient is φ = 63428409600.

The previous prime is 79285512113. The next prime is 79285512149. The reversal of 79285512125 is 52121558297.

It can be written as a sum of positive squares in 4 ways, for example, as 21095529049 + 58189983076 = 145243^2 + 241226^2 .

It is not a de Polignac number, because 79285512125 - 2²² = 79281317821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79285512125.

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, 317141924 + ... + 317142173.

It is an arithmetic number, because the mean of its divisors is an integer number (12368539911).

Almost surely, 2^79285512125 is an apocalyptic number.

It is an amenable number.

79285512125 is a deficient number, since it is larger than the sum of its proper divisors (19662807163).

79285512125 is an equidigital number, since it uses as much as digits as its factorization.

79285512125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634284112 (or 634284102 counting only the distinct ones).

The product of its digits is 504000, while the sum is 47.

The spelling of 79285512125 in words is "seventy-nine billion, two hundred eighty-five million, five hundred twelve thousand, one hundred twenty-five".