79321625 has 8 divisors (see below), whose sum is σ = 98993544. Its totient is φ = 63457200.

The previous prime is 79321603. The next prime is 79321631. The reversal of 79321625 is 52612397.

It can be written as a sum of positive squares in 4 ways, for example, as 15768841 + 63552784 = 3971^2 + 7972^2 .

It is not a de Polignac number, because 79321625 - 2¹⁴ = 79305241 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 7 ways as a sum of consecutive naturals, for example, 317162 + ... + 317411.

It is an arithmetic number, because the mean of its divisors is an integer number (12374193).

Almost surely, 2^79321625 is an apocalyptic number.

It is an amenable number.

79321625 is a deficient number, since it is larger than the sum of its proper divisors (19671919).

79321625 is an equidigital number, since it uses as much as digits as its factorization.

79321625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634588 (or 634578 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 79321625 is about 8906.2688596292. The cubic root of 79321625 is about 429.6655502837.

The spelling of 79321625 in words is "seventy-nine million, three hundred twenty-one thousand, six hundred twenty-five".