22225172 has 12 divisors (see below), whose sum is σ = 39721920. Its totient is φ = 10876056.

The previous prime is 22225129. The next prime is 22225211. The reversal of 22225172 is 27152222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58922 + ... + 59297.

It is an arithmetic number, because the mean of its divisors is an integer number (3310160).

Almost surely, 2^22225172 is an apocalyptic number.

It is an amenable number.

22225172 is a deficient number, since it is larger than the sum of its proper divisors (17496748).

22225172 is a wasteful number, since it uses less digits than its factorization.

22225172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118270 (or 118268 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 22225172 is about 4714.3580687088. The cubic root of 22225172 is about 281.1566609115.

Adding to 22225172 its reverse (27152222), we get a palindrome (49377394).

The spelling of 22225172 in words is "twenty-two million, two hundred twenty-five thousand, one hundred seventy-two".