22905025 has 48 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 14918400.

The previous prime is 22905017. The next prime is 22905049. The reversal of 22905025 is 52050922.

22905025 = 160² + 161² + ... + 417².

It is not a de Polignac number, because 22905025 - 2³ = 22905017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153651 + ... + 153799.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^22905025 is an apocalyptic number.

22905025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22905025 is a deficient number, since it is larger than the sum of its proper divisors (11467775).

22905025 is a wasteful number, since it uses less digits than its factorization.

22905025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 22905025 is about 4785.9194518922. The cubic root of 22905025 is about 283.9947140787.

Adding to 22905025 its reverse (52050922), we get a palindrome (74955947).

The spelling of 22905025 in words is "twenty-two million, nine hundred five thousand, twenty-five".