22225455 has 64 divisors (see below), whose sum is σ = 46771200. Its totient is φ = 9797760.

The previous prime is 22225451. The next prime is 22225471. The reversal of 22225455 is 55452222.

22225455 = 1² + 2² + ... + 405².

It is not a de Polignac number, because 22225455 - 2² = 22225451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22225451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27000 + ... + 27810.

It is an arithmetic number, because the mean of its divisors is an integer number (730800).

Almost surely, 2^22225455 is an apocalyptic number.

22225455 is an abundant number, since it is smaller than the sum of its proper divisors (24545745).

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

22225455 is a wasteful number, since it uses less digits than its factorization.

22225455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 855 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 22225455 is about 4714.3880833041. The cubic root of 22225455 is about 281.1578542581.

Adding to 22225455 its reverse (55452222), we get a palindrome (77677677).

The spelling of 22225455 in words is "twenty-two million, two hundred twenty-five thousand, four hundred fifty-five".