225594475217 has 2 divisors, whose sum is σ = 225594475218. Its totient is φ = 225594475216.

The previous prime is 225594475213. The next prime is 225594475229. The reversal of 225594475217 is 712574495522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220997770816 + 4596704401 = 470104^2 + 67799^2 .

It is a cyclic number.

It is not a de Polignac number, because 225594475217 - 2² = 225594475213 is a prime.

It is not a weakly prime, because it can be changed into another prime (225594475213) 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 as a sum of consecutive naturals, namely, 112797237608 + 112797237609.

It is an arithmetic number, because the mean of its divisors is an integer number (112797237609).

Almost surely, 2^225594475217 is an apocalyptic number.

It is an amenable number.

225594475217 is a deficient number, since it is larger than the sum of its proper divisors (1).

225594475217 is an equidigital number, since it uses as much as digits as its factorization.

225594475217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056000, while the sum is 53.

The spelling of 225594475217 in words is "two hundred twenty-five billion, five hundred ninety-four million, four hundred seventy-five thousand, two hundred seventeen".