225997227 has 6 divisors (see below), whose sum is σ = 326440452. Its totient is φ = 150664812.

The previous prime is 225997217. The next prime is 225997237. The reversal of 225997227 is 722799522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (225997217) and next prime (225997237).

It is not a de Polignac number, because 225997227 - 2¹⁹ = 225472939 is a prime.

It is a super-2 number, since 2×225997227² = 102149493223379058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225997217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12555393 + ... + 12555410.

It is an arithmetic number, because the mean of its divisors is an integer number (54406742).

Almost surely, 2^225997227 is an apocalyptic number.

225997227 is a deficient number, since it is larger than the sum of its proper divisors (100443225).

225997227 is a wasteful number, since it uses less digits than its factorization.

225997227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25110809 (or 25110806 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 225997227 is about 15033.2041494819. The cubic root of 225997227 is about 609.1174435992.

The spelling of 225997227 in words is "two hundred twenty-five million, nine hundred ninety-seven thousand, two hundred twenty-seven".