22642625 has 8 divisors (see below), whose sum is σ = 28258152. Its totient is φ = 18114000.

The previous prime is 22642561. The next prime is 22642637. The reversal of 22642625 is 52624622.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5345344 + 17297281 = 2312^2 + 4159^2 .

It is not a de Polignac number, because 22642625 - 2⁶ = 22642561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90446 + ... + 90695.

It is an arithmetic number, because the mean of its divisors is an integer number (3532269).

Almost surely, 2^22642625 is an apocalyptic number.

22642625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22642625 is a deficient number, since it is larger than the sum of its proper divisors (5615527).

22642625 is an equidigital number, since it uses as much as digits as its factorization.

22642625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181156 (or 181146 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 22642625 is about 4758.4267358025. The cubic root of 22642625 is about 282.9060649587.

The spelling of 22642625 in words is "twenty-two million, six hundred forty-two thousand, six hundred twenty-five".