225170017 has 2 divisors, whose sum is σ = 225170018. Its totient is φ = 225170016.

The previous prime is 225170003. The next prime is 225170041. The reversal of 225170017 is 710071522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223323136 + 1846881 = 14944^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 225170017 - 2¹⁵ = 225137249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225169973 and 225170000.

It is not a weakly prime, because it can be changed into another prime (225170047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112585008 + 112585009.

It is an arithmetic number, because the mean of its divisors is an integer number (112585009).

Almost surely, 2^225170017 is an apocalyptic number.

It is an amenable number.

225170017 is a deficient number, since it is larger than the sum of its proper divisors (1).

225170017 is an equidigital number, since it uses as much as digits as its factorization.

225170017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 225170017 is about 15005.6661631532. Note that the first 3 decimals coincide. The cubic root of 225170017 is about 608.3733576885.

The spelling of 225170017 in words is "two hundred twenty-five million, one hundred seventy thousand, seventeen".