79149224662225 has 81 divisors (see below), whose sum is σ = 100849270141809. Its totient is φ = 61621306344000.

The previous prime is 79149224662219. The next prime is 79149224662231. The reversal of 79149224662225 is 52226642294197.

The square root of 79149224662225 is 8896585.

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

It is an interprime number because it is at equal distance from previous prime (79149224662219) and next prime (79149224662231).

It can be written as a sum of positive squares in 4 ways, for example, as 14614480306321 + 64534744355904 = 3822889^2 + 8033352^2 .

It is not a de Polignac number, because 79149224662225 - 2²⁷ = 79149090444497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 354929258464 + ... + 354929258686.

Almost surely, 2^{79149224662225} is an apocalyptic number.

79149224662225 is the 8896585-th square number.

79149224662225 is the 4448293-rd centered octagonal number.

It is an amenable number.

79149224662225 is a deficient number, since it is larger than the sum of its proper divisors (21700045479584).

79149224662225 is an frugal number, since it uses more digits than its factorization.

79149224662225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 408 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 61.

The spelling of 79149224662225 in words is "seventy-nine trillion, one hundred forty-nine billion, two hundred twenty-four million, six hundred sixty-two thousand, two hundred twenty-five".