22917418225 has 81 divisors (see below), whose sum is σ = 32928639177. Its totient is φ = 15811860480.

The previous prime is 22917418219. The next prime is 22917418289. The reversal of 22917418225 is 52281471922.

The square root of 22917418225 is 151385.

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

It can be written as a sum of positive squares in 40 ways, for example, as 22410988209 + 506430016 = 149703^2 + 22504^2 .

It is not a de Polignac number, because 22917418225 - 2⁵ = 22917418193 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 (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 167280357 + ... + 167280493.

Almost surely, 2^22917418225 is an apocalyptic number.

22917418225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22917418225 is the 151385-th square number.

22917418225 is the 75693-rd centered octagonal number.

It is an amenable number.

22917418225 is a deficient number, since it is larger than the sum of its proper divisors (10011220952).

22917418225 is a wasteful number, since it uses less digits than its factorization.

22917418225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 172 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The spelling of 22917418225 in words is "twenty-two billion, nine hundred seventeen million, four hundred eighteen thousand, two hundred twenty-five".