79916225 has 6 divisors (see below), whose sum is σ = 99096150. Its totient is φ = 63932960.

The previous prime is 79916203. The next prime is 79916227. The reversal of 79916225 is 52261997.

It can be written as a sum of positive squares in 3 ways, for example, as 919681 + 78996544 = 959^2 + 8888^2 .

It is not a de Polignac number, because 79916225 - 2¹⁰ = 79915201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79916227) 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, 1598300 + ... + 1598349.

It is an arithmetic number, because the mean of its divisors is an integer number (16516025).

Almost surely, 2^79916225 is an apocalyptic number.

It is an amenable number.

79916225 is a deficient number, since it is larger than the sum of its proper divisors (19179925).

79916225 is a wasteful number, since it uses less digits than its factorization.

79916225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196659 (or 3196654 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 79916225 is about 8939.5875184485. The cubic root of 79916225 is about 430.7364790028.

The spelling of 79916225 in words is "seventy-nine million, nine hundred sixteen thousand, two hundred twenty-five".