79866752425 has 12 divisors (see below), whose sum is σ = 100015318476. Its totient is φ = 63260792000.

The previous prime is 79866752401. The next prime is 79866752479. The reversal of 79866752425 is 52425766897.

It can be written as a sum of positive squares in 6 ways, for example, as 14510852521 + 65355899904 = 120461^2 + 255648^2 .

It is not a de Polignac number, because 79866752425 - 2⁵ = 79866752393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15812674 + ... + 15817723.

It is an arithmetic number, because the mean of its divisors is an integer number (8334609873).

Almost surely, 2^79866752425 is an apocalyptic number.

It is an amenable number.

79866752425 is a deficient number, since it is larger than the sum of its proper divisors (20148566051).

79866752425 is a wasteful number, since it uses less digits than its factorization.

79866752425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31630508 (or 31630503 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 79866752425 in words is "seventy-nine billion, eight hundred sixty-six million, seven hundred fifty-two thousand, four hundred twenty-five".