79419694225 has 27 divisors (see below), whose sum is σ = 99388526097. Its totient is φ = 62955216480.

The previous prime is 79419694213. The next prime is 79419694229. The reversal of 79419694225 is 52249691497.

The square root of 79419694225 is 281815.

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

It can be written as a sum of positive squares in 4 ways, for example, as 9605372049 + 69814322176 = 98007^2 + 264224^2 .

It is not a de Polignac number, because 79419694225 - 2⁷ = 79419694097 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 79419694225.

It is not an unprimeable number, because it can be changed into a prime (79419694229) 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, 221224596 + ... + 221224954.

Almost surely, 2^79419694225 is an apocalyptic number.

79419694225 is the 281815-th square number.

79419694225 is the 140908-th centered octagonal number.

It is an amenable number.

79419694225 is a deficient number, since it is larger than the sum of its proper divisors (19968831872).

79419694225 is an frugal number, since it uses more digits than its factorization.

79419694225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 521 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The spelling of 79419694225 in words is "seventy-nine billion, four hundred nineteen million, six hundred ninety-four thousand, two hundred twenty-five".