17256763225 has 81 divisors (see below), whose sum is σ = 24237898173. Its totient is φ = 12182264640.

The previous prime is 17256763217. The next prime is 17256763231. The reversal of 17256763225 is 52236765271.

The square root of 17256763225 is 131365.

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 4447956249 + 12808806976 = 66693^2 + 113176^2 .

It is not a de Polignac number, because 17256763225 - 2³ = 17256763217 is a prime.

It is a Duffinian number.

Its product of digits (1058400) is a multiple of the sum of its prime divisors (108).

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, 367165152 + ... + 367165198.

Almost surely, 2^17256763225 is an apocalyptic number.

17256763225 is the 131365-th square number.

17256763225 is the 65683-rd centered octagonal number.

It is an amenable number.

17256763225 is a deficient number, since it is larger than the sum of its proper divisors (6981134948).

17256763225 is an equidigital number, since it uses as much as digits as its factorization.

17256763225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 108 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 46.

The spelling of 17256763225 in words is "seventeen billion, two hundred fifty-six million, seven hundred sixty-three thousand, two hundred twenty-five".