79515125 has 16 divisors (see below), whose sum is σ = 99835632. Its totient is φ = 63227200.

The previous prime is 79515097. The next prime is 79515143. The reversal of 79515125 is 52151597.

It can be written as a sum of positive squares in 8 ways, for example, as 3319684 + 76195441 = 1822^2 + 8729^2 .

It is not a de Polignac number, because 79515125 - 2¹⁸ = 79252981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19787 + ... + 23463.

It is an arithmetic number, because the mean of its divisors is an integer number (6239727).

Almost surely, 2^79515125 is an apocalyptic number.

It is an amenable number.

79515125 is a deficient number, since it is larger than the sum of its proper divisors (20320507).

79515125 is a wasteful number, since it uses less digits than its factorization.

79515125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3855 counting only the distinct ones).

The product of its digits is 15750, while the sum is 35.

The square root of 79515125 is about 8917.1253776091. The cubic root of 79515125 is about 430.0146470583.

The spelling of 79515125 in words is "seventy-nine million, five hundred fifteen thousand, one hundred twenty-five".