22642825 has 6 divisors (see below), whose sum is σ = 28077134. Its totient is φ = 18114240.

The previous prime is 22642729. The next prime is 22642831. The reversal of 22642825 is 52824622.

It can be written as a sum of positive squares in 3 ways, for example, as 251001 + 22391824 = 501^2 + 4732^2 .

It is not a de Polignac number, because 22642825 - 2⁹ = 22642313 is a prime.

It is a Duffinian 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, 452832 + ... + 452881.

Almost surely, 2^22642825 is an apocalyptic number.

22642825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22642825 is a deficient number, since it is larger than the sum of its proper divisors (5434309).

22642825 is an equidigital number, since it uses as much as digits as its factorization.

22642825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905723 (or 905718 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 22642825 is about 4758.4477511054. The cubic root of 22642825 is about 282.9068979164.

The spelling of 22642825 in words is "twenty-two million, six hundred forty-two thousand, eight hundred twenty-five".