22437225 has 18 divisors (see below), whose sum is σ = 40187966. Its totient is φ = 11966400.

The previous prime is 22437221. The next prime is 22437253. The reversal of 22437225 is 52273422.

22437225 is a `hidden beast` number, since 2 + 2 + 437 + 225 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 870489 + 21566736 = 933^2 + 4644^2 .

It is not a de Polignac number, because 22437225 - 2² = 22437221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22437221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49636 + ... + 50085.

Almost surely, 2^22437225 is an apocalyptic number.

22437225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22437225 is a deficient number, since it is larger than the sum of its proper divisors (17750741).

22437225 is a wasteful number, since it uses less digits than its factorization.

22437225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99737 (or 99729 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22437225 is about 4736.7948023954. The cubic root of 22437225 is about 282.0480150625.

The spelling of 22437225 in words is "twenty-two million, four hundred thirty-seven thousand, two hundred twenty-five".