79989625 has 16 divisors (see below), whose sum is σ = 101327616. Its totient is φ = 63030000.

The previous prime is 79989619. The next prime is 79989631. The reversal of 79989625 is 52698997.

It is an interprime number because it is at equal distance from previous prime (79989619) and next prime (79989631).

It is not a de Polignac number, because 79989625 - 2³ = 79989617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3600 + ... + 13150.

It is an arithmetic number, because the mean of its divisors is an integer number (6332976).

Almost surely, 2^79989625 is an apocalyptic number.

It is an amenable number.

79989625 is a deficient number, since it is larger than the sum of its proper divisors (21337991).

79989625 is an equidigital number, since it uses as much as digits as its factorization.

79989625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633 (or 9623 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 79989625 is about 8943.6919110622. The cubic root of 79989625 is about 430.8683103178.

The spelling of 79989625 in words is "seventy-nine million, nine hundred eighty-nine thousand, six hundred twenty-five".