717720622225 has 12 divisors (see below), whose sum is σ = 889989260380. Its totient is φ = 574166376000.

The previous prime is 717720622219. The next prime is 717720622291. The reversal of 717720622225 is 522226027717.

It can be written as a sum of positive squares in 6 ways, for example, as 28898640016 + 688821982209 = 169996^2 + 829953^2 .

It is not a de Polignac number, because 717720622225 - 2²⁵ = 717687067793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1407031 + ... + 1848019.

Almost surely, 2^717720622225 is an apocalyptic number.

It is an amenable number.

717720622225 is a deficient number, since it is larger than the sum of its proper divisors (172268638155).

717720622225 is a wasteful number, since it uses less digits than its factorization.

717720622225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506100 (or 506095 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 717720622225 in words is "seven hundred seventeen billion, seven hundred twenty million, six hundred twenty-two thousand, two hundred twenty-five".