22239925 has 6 divisors (see below), whose sum is σ = 27577538. Its totient is φ = 17791920.

The previous prime is 22239911. The next prime is 22239947. The reversal of 22239925 is 52993222.

It can be written as a sum of positive squares in 3 ways, for example, as 27556 + 22212369 = 166^2 + 4713^2 .

It is not a de Polignac number, because 22239925 - 2⁷ = 22239797 is a prime.

It is a super-2 number, since 2×22239925² = 989228528011250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444774 + ... + 444823.

Almost surely, 2^22239925 is an apocalyptic number.

22239925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22239925 is a deficient number, since it is larger than the sum of its proper divisors (5337613).

22239925 is an equidigital number, since it uses as much as digits as its factorization.

22239925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889607 (or 889602 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 22239925 is about 4715.9224972427. The cubic root of 22239925 is about 281.2188574571.

The spelling of 22239925 in words is "twenty-two million, two hundred thirty-nine thousand, nine hundred twenty-five".