872664247225 has 27 divisors (see below), whose sum is σ = 1095784936239. Its totient is φ = 689413770000.

The previous prime is 872664247219. The next prime is 872664247241. The reversal of 872664247225 is 522742466278.

The square root of 872664247225 is 934165.

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., 314159129001 + 558505118224 = 560499^2 + 747332^2 .

It is not a de Polignac number, because 872664247225 - 2²³ = 872655858617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 387677350 + ... + 387679600.

Almost surely, 2^872664247225 is an apocalyptic number.

872664247225 is the 934165-th square number.

872664247225 is the 467083-rd centered octagonal number.

It is an amenable number.

872664247225 is a deficient number, since it is larger than the sum of its proper divisors (223120689014).

872664247225 is an frugal number, since it uses more digits than its factorization.

872664247225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678 (or 2339 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 55.

The spelling of 872664247225 in words is "eight hundred seventy-two billion, six hundred sixty-four million, two hundred forty-seven thousand, two hundred twenty-five".