22089390625 has 63 divisors (see below), whose sum is σ = 29310816223. Its totient is φ = 16646000000.

The previous prime is 22089390571. The next prime is 22089390641. The reversal of 22089390625 is 52609398022.

The square root of 22089390625 is 148625.

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

It can be written as a sum of positive squares in 31 ways, for example, as 707932449 + 21381458176 = 26607^2 + 146224^2 .

It is not a de Polignac number, because 22089390625 - 2⁷ = 22089390497 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 62 ways as a sum of consecutive naturals, for example, 538765605 + ... + 538765645.

Almost surely, 2^22089390625 is an apocalyptic number.

22089390625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22089390625 is the 148625-th square number.

22089390625 is the 74313-rd centered octagonal number.

It is an amenable number.

22089390625 is a deficient number, since it is larger than the sum of its proper divisors (7221425598).

22089390625 is an frugal number, since it uses more digits than its factorization.

22089390625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 22089390625 in words is "twenty-two billion, eighty-nine million, three hundred ninety thousand, six hundred twenty-five".