225682717 has 4 divisors (see below), whose sum is σ = 243042940. Its totient is φ = 208322496.

The previous prime is 225682679. The next prime is 225682747. The reversal of 225682717 is 717286522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41293476 + 184389241 = 6426^2 + 13579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225682717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225682717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225682747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8680092 + ... + 8680117.

It is an arithmetic number, because the mean of its divisors is an integer number (60760735).

Almost surely, 2^225682717 is an apocalyptic number.

It is an amenable number.

225682717 is a deficient number, since it is larger than the sum of its proper divisors (17360223).

225682717 is a wasteful number, since it uses less digits than its factorization.

225682717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17360222.

The product of its digits is 94080, while the sum is 40.

The square root of 225682717 is about 15022.7399964188. The cubic root of 225682717 is about 608.8347521306.

The spelling of 225682717 in words is "two hundred twenty-five million, six hundred eighty-two thousand, seven hundred seventeen".