225371917 has 8 divisors (see below), whose sum is σ = 239158080. Its totient is φ = 211918080.

The previous prime is 225371903. The next prime is 225371933. The reversal of 225371917 is 719173522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225371917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225371947) 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 7 ways as a sum of consecutive naturals, for example, 81684 + ... + 84397.

It is an arithmetic number, because the mean of its divisors is an integer number (29894760).

Almost surely, 2^225371917 is an apocalyptic number.

It is an amenable number.

225371917 is a deficient number, since it is larger than the sum of its proper divisors (13786163).

225371917 is a wasteful number, since it uses less digits than its factorization.

225371917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166163.

The product of its digits is 26460, while the sum is 37.

The square root of 225371917 is about 15012.3921145166. The cubic root of 225371917 is about 608.5551371998. Note that the first 3 decimals are identical.

The spelling of 225371917 in words is "two hundred twenty-five million, three hundred seventy-one thousand, nine hundred seventeen".