717436225 has 27 divisors (see below), whose sum is σ = 979859811. Its totient is φ = 520700400.

The previous prime is 717436169. The next prime is 717436231. The reversal of 717436225 is 522634717.

It is a happy number.

The square root of 717436225 is 26785.

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., 258277041 + 459159184 = 16071^2 + 21428^2 .

It is not a de Polignac number, because 717436225 - 2²⁷ = 583218497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1472932 + ... + 1473418.

Almost surely, 2^717436225 is an apocalyptic number.

717436225 is the 26785-th square number.

717436225 is the 13393-rd centered octagonal number.

It is an amenable number.

717436225 is a deficient number, since it is larger than the sum of its proper divisors (262423586).

717436225 is an equidigital number, since it uses as much as digits as its factorization.

717436225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 503 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The cubic root of 717436225 is about 895.2158587985.

It can be divided in two parts, 71 and 7436225, that added together give a triangular number (7436296 = T₃₈₅₆).

The spelling of 717436225 in words is "seven hundred seventeen million, four hundred thirty-six thousand, two hundred twenty-five".