225917227 has 16 divisors (see below), whose sum is σ = 239263200. Its totient is φ = 213034752.

The previous prime is 225917207. The next prime is 225917287. The reversal of 225917227 is 722719522.

It is a de Polignac number, because none of the positive numbers 2^k-225917227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225917207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236583 + ... + 237535.

It is an arithmetic number, because the mean of its divisors is an integer number (14953950).

Almost surely, 2^225917227 is an apocalyptic number.

225917227 is a deficient number, since it is larger than the sum of its proper divisors (13345973).

225917227 is a wasteful number, since it uses less digits than its factorization.

225917227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its digits is 35280, while the sum is 37.

The square root of 225917227 is about 15030.5431372256. The cubic root of 225917227 is about 609.0455619702.

The spelling of 225917227 in words is "two hundred twenty-five million, nine hundred seventeen thousand, two hundred twenty-seven".