22528425 has 24 divisors (see below), whose sum is σ = 37532320. Its totient is φ = 11923200.

The previous prime is 22528423. The next prime is 22528453. The reversal of 22528425 is 52482522.

It is not a de Polignac number, because 22528425 - 2¹ = 22528423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22528392 and 22528401.

It is not an unprimeable number, because it can be changed into a prime (22528423) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9345 + ... + 11505.

Almost surely, 2^22528425 is an apocalyptic number.

22528425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22528425 is a deficient number, since it is larger than the sum of its proper divisors (15003895).

22528425 is a wasteful number, since it uses less digits than its factorization.

22528425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313 (or 2308 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 22528425 is about 4746.4118026147. The cubic root of 22528425 is about 282.4296428543.

The spelling of 22528425 in words is "twenty-two million, five hundred twenty-eight thousand, four hundred twenty-five".