79507920425 has 6 divisors (see below), whose sum is σ = 98589821358. Its totient is φ = 63606336320.

The previous prime is 79507920421. The next prime is 79507920463. The reversal of 79507920425 is 52402970597.

It can be written as a sum of positive squares in 3 ways, for example, as 24547682329 + 54960238096 = 156677^2 + 234436^2 .

It is not a de Polignac number, because 79507920425 - 2² = 79507920421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79507920421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1590158384 + ... + 1590158433.

It is an arithmetic number, because the mean of its divisors is an integer number (16431636893).

Almost surely, 2^79507920425 is an apocalyptic number.

It is an amenable number.

79507920425 is a deficient number, since it is larger than the sum of its proper divisors (19081900933).

79507920425 is a wasteful number, since it uses less digits than its factorization.

79507920425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180316827 (or 3180316822 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 79507920425 in words is "seventy-nine billion, five hundred seven million, nine hundred twenty thousand, four hundred twenty-five".