22163225 has 24 divisors (see below), whose sum is σ = 31783680. Its totient is φ = 15016320.

The previous prime is 22163201. The next prime is 22163261. The reversal of 22163225 is 52236122.

It is not a de Polignac number, because 22163225 - 2⁶ = 22163161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22163225.

It is a congruent number.

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, 14864 + ... + 16286.

It is an arithmetic number, because the mean of its divisors is an integer number (1324320).

Almost surely, 2^22163225 is an apocalyptic number.

22163225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22163225 is a deficient number, since it is larger than the sum of its proper divisors (9620455).

22163225 is a wasteful number, since it uses less digits than its factorization.

22163225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1524 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 22163225 is about 4707.7834487155. The cubic root of 22163225 is about 280.8952003416.

Adding to 22163225 its reverse (52236122), we get a palindrome (74399347).

The spelling of 22163225 in words is "twenty-two million, one hundred sixty-three thousand, two hundred twenty-five".