22257065 has 24 divisors (see below), whose sum is σ = 28429440. Its totient is φ = 16720704.

The previous prime is 22257061. The next prime is 22257071. The reversal of 22257065 is 56075222.

It is not a de Polignac number, because 22257065 - 2² = 22257061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (22257061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281696 + ... + 281774.

It is an arithmetic number, because the mean of its divisors is an integer number (1184560).

Almost surely, 2^22257065 is an apocalyptic number.

It is an amenable number.

22257065 is a deficient number, since it is larger than the sum of its proper divisors (6172375).

22257065 is an equidigital number, since it uses as much as digits as its factorization.

22257065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 22257065 is about 4717.7393950917. The cubic root of 22257065 is about 281.2910827230.

The spelling of 22257065 in words is "twenty-two million, two hundred fifty-seven thousand, sixty-five".