79791725 has 12 divisors (see below), whose sum is σ = 106553076. Its totient is φ = 58922880.

The previous prime is 79791713. The next prime is 79791739. The reversal of 79791725 is 52719797.

It can be written as a sum of positive squares in 6 ways, for example, as 10252804 + 69538921 = 3202^2 + 8339^2 .

It is not a de Polignac number, because 79791725 - 2¹⁶ = 79726189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79791725.

It is a congruent 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, 122432 + ... + 123081.

It is an arithmetic number, because the mean of its divisors is an integer number (8879423).

Almost surely, 2^79791725 is an apocalyptic number.

It is an amenable number.

79791725 is a deficient number, since it is larger than the sum of its proper divisors (26761351).

79791725 is a wasteful number, since it uses less digits than its factorization.

79791725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245536 (or 245531 counting only the distinct ones).

The product of its digits is 277830, while the sum is 47.

The square root of 79791725 is about 8932.6213957606. The cubic root of 79791725 is about 430.5126839650.

The spelling of 79791725 in words is "seventy-nine million, seven hundred ninety-one thousand, seven hundred twenty-five".