22972825 has 6 divisors (see below), whose sum is σ = 28486334. Its totient is φ = 18378240.

The previous prime is 22972777. The next prime is 22972841. The reversal of 22972825 is 52827922.

It can be written as a sum of positive squares in 3 ways, for example, as 571536 + 22401289 = 756^2 + 4733^2 .

It is not a de Polignac number, because 22972825 - 2¹¹ = 22970777 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 5 ways as a sum of consecutive naturals, for example, 459432 + ... + 459481.

Almost surely, 2^22972825 is an apocalyptic number.

22972825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22972825 is a deficient number, since it is larger than the sum of its proper divisors (5513509).

22972825 is an equidigital number, since it uses as much as digits as its factorization.

22972825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918923 (or 918918 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 22972825 is about 4792.9974963482. The cubic root of 22972825 is about 284.2746508228.

The spelling of 22972825 in words is "twenty-two million, nine hundred seventy-two thousand, eight hundred twenty-five".