22125225 has 24 divisors (see below), whose sum is σ = 36832960. Its totient is φ = 11718720.

The previous prime is 22125217. The next prime is 22125239. The reversal of 22125225 is 52252122.

It is not a de Polignac number, because 22125225 - 2³ = 22125217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10836 + ... + 12714.

Almost surely, 2^22125225 is an apocalyptic number.

22125225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22125225 is a deficient number, since it is larger than the sum of its proper divisors (14707735).

22125225 is a wasteful number, since it uses less digits than its factorization.

22125225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2044 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 22125225 is about 4703.7458477260. The cubic root of 22125225 is about 280.7345720362.

Adding to 22125225 its reverse (52252122), we get a palindrome (74377347).

The spelling of 22125225 in words is "twenty-two million, one hundred twenty-five thousand, two hundred twenty-five".