225377217 has 36 divisors (see below), whose sum is σ = 357649344. Its totient is φ = 136674720.

The previous prime is 225377209. The next prime is 225377219. The reversal of 225377217 is 712773522.

It is not a de Polignac number, because 225377217 - 2³ = 225377209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225377219) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 106948 + ... + 109034.

It is an arithmetic number, because the mean of its divisors is an integer number (9934704).

Almost surely, 2^225377217 is an apocalyptic number.

It is an amenable number.

225377217 is a deficient number, since it is larger than the sum of its proper divisors (132272127).

225377217 is a wasteful number, since it uses less digits than its factorization.

225377217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2174 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 225377217 is about 15012.5686343144. The cubic root of 225377217 is about 608.5599075619.

The spelling of 225377217 in words is "two hundred twenty-five million, three hundred seventy-seven thousand, two hundred seventeen".