79828225 has 6 divisors (see below), whose sum is σ = 98987030. Its totient is φ = 63862560.

The previous prime is 79828219. The next prime is 79828237. The reversal of 79828225 is 52282897.

It can be written as a sum of positive squares in 3 ways, for example, as 1399489 + 78428736 = 1183^2 + 8856^2 .

It is not a de Polignac number, because 79828225 - 2¹³ = 79820033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1596540 + ... + 1596589.

Almost surely, 2^79828225 is an apocalyptic number.

It is an amenable number.

79828225 is a deficient number, since it is larger than the sum of its proper divisors (19158805).

79828225 is a wasteful number, since it uses less digits than its factorization.

79828225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193139 (or 3193134 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 79828225 is about 8934.6642354372. The cubic root of 79828225 is about 430.5783186639.

The spelling of 79828225 in words is "seventy-nine million, eight hundred twenty-eight thousand, two hundred twenty-five".