22455225 has 60 divisors (see below), whose sum is σ = 44846956. Its totient is φ = 11041920.

The previous prime is 22455221. The next prime is 22455269. The reversal of 22455225 is 52255422.

It can be written as a sum of positive squares in 6 ways, for example, as 7338681 + 15116544 = 2709^2 + 3888^2 .

It is not a de Polignac number, because 22455225 - 2² = 22455221 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22455221) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 25899 + ... + 26751.

Almost surely, 2^22455225 is an apocalyptic number.

22455225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22455225 is a deficient number, since it is larger than the sum of its proper divisors (22391731).

22455225 is a wasteful number, since it uses less digits than its factorization.

22455225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 874 counting only the distinct ones).

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

The square root of 22455225 is about 4738.6944404551. The cubic root of 22455225 is about 282.1234181372.

The spelling of 22455225 in words is "twenty-two million, four hundred fifty-five thousand, two hundred twenty-five".