22225400 has 24 divisors (see below), whose sum is σ = 51674520. Its totient is φ = 8890080.

The previous prime is 22225387. The next prime is 22225417. The reversal of 22225400 is 452222.

22225400 = 6² + 7² + ... + 405².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55364 + ... + 55763.

It is an arithmetic number, because the mean of its divisors is an integer number (2153105).

Almost surely, 2^22225400 is an apocalyptic number.

22225400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22225400 is an abundant number, since it is smaller than the sum of its proper divisors (29449120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22225400 is a wasteful number, since it uses less digits than its factorization.

22225400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111143 (or 111134 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22225400 is about 4714.3822500939. The cubic root of 22225400 is about 281.1576223364.

Adding to 22225400 its reverse (452222), we get a palindrome (22677622).

The spelling of 22225400 in words is "twenty-two million, two hundred twenty-five thousand, four hundred".