22417225 has 12 divisors (see below), whose sum is σ = 28001680. Its totient is φ = 17802000.

The previous prime is 22417217. The next prime is 22417243. The reversal of 22417225 is 52271422.

It is not a de Polignac number, because 22417225 - 2³ = 22417217 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22417225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250 + ... + 6700.

Almost surely, 2^22417225 is an apocalyptic number.

22417225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22417225 is a deficient number, since it is larger than the sum of its proper divisors (5584455).

22417225 is a wasteful number, since it uses less digits than its factorization.

22417225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6600 (or 6595 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 22417225 is about 4734.6831995393. The cubic root of 22417225 is about 281.9641865557.

Adding to 22417225 its reverse (52271422), we get a palindrome (74688647).

The spelling of 22417225 in words is "twenty-two million, four hundred seventeen thousand, two hundred twenty-five".