79015125825 has 36 divisors (see below), whose sum is σ = 141616626060. Its totient is φ = 42114078720.

The previous prime is 79015125823. The next prime is 79015125841. The reversal of 79015125825 is 52852151097.

It can be written as a sum of positive squares in 6 ways, for example, as 16066323009 + 62948802816 = 126753^2 + 250896^2 .

It is not a de Polignac number, because 79015125825 - 2¹ = 79015125823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (79015125823) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 236361 + ... + 462489.

Almost surely, 2^79015125825 is an apocalyptic number.

79015125825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79015125825 is a deficient number, since it is larger than the sum of its proper divisors (62601500235).

79015125825 is a wasteful number, since it uses less digits than its factorization.

79015125825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227698 (or 227690 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 45.

The spelling of 79015125825 in words is "seventy-nine billion, fifteen million, one hundred twenty-five thousand, eight hundred twenty-five".