22578625 has 8 divisors (see below), whose sum is σ = 28178280. Its totient is φ = 18062800.

The previous prime is 22578613. The next prime is 22578649. The reversal of 22578625 is 52687522.

It can be written as a sum of positive squares in 4 ways, for example, as 685584 + 21893041 = 828^2 + 4679^2 .

It is not a de Polignac number, because 22578625 - 2¹¹ = 22576577 is a prime.

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, 90190 + ... + 90439.

It is an arithmetic number, because the mean of its divisors is an integer number (3522285).

Almost surely, 2^22578625 is an apocalyptic number.

22578625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22578625 is a deficient number, since it is larger than the sum of its proper divisors (5599655).

22578625 is an equidigital number, since it uses as much as digits as its factorization.

22578625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180644 (or 180634 counting only the distinct ones).

The product of its digits is 67200, while the sum is 37.

The square root of 22578625 is about 4751.6970652599. The cubic root of 22578625 is about 282.6392661810.

The spelling of 22578625 in words is "twenty-two million, five hundred seventy-eight thousand, six hundred twenty-five".