79560664225 has 27 divisors (see below), whose sum is σ = 114776440947. Its totient is φ = 54549114480.

The previous prime is 79560664223. The next prime is 79560664247. The reversal of 79560664225 is 52246606597.

The square root of 79560664225 is 282065.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28641839121 + 50918825104 = 169239^2 + 225652^2 .

It is not a de Polignac number, because 79560664225 - 2¹ = 79560664223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79560664223) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9868246 + ... + 9876304.

Almost surely, 2^79560664225 is an apocalyptic number.

79560664225 is the 282065-th square number.

79560664225 is the 141033-rd centered octagonal number.

It is an amenable number.

79560664225 is a deficient number, since it is larger than the sum of its proper divisors (35215776722).

79560664225 is an frugal number, since it uses more digits than its factorization.

79560664225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16142 (or 8071 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 79560664225 in words is "seventy-nine billion, five hundred sixty million, six hundred sixty-four thousand, two hundred twenty-five".