225375217 has 2 divisors, whose sum is σ = 225375218. Its totient is φ = 225375216.

The previous prime is 225375197. The next prime is 225375259. The reversal of 225375217 is 712573522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216796176 + 8579041 = 14724^2 + 2929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225375217 is a prime.

It is not a weakly prime, because it can be changed into another prime (225375517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112687608 + 112687609.

It is an arithmetic number, because the mean of its divisors is an integer number (112687609).

Almost surely, 2^225375217 is an apocalyptic number.

It is an amenable number.

225375217 is a deficient number, since it is larger than the sum of its proper divisors (1).

225375217 is an equidigital number, since it uses as much as digits as its factorization.

225375217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29400, while the sum is 34.

The square root of 225375217 is about 15012.5020233138. The cubic root of 225375217 is about 608.5581074341.

The spelling of 225375217 in words is "two hundred twenty-five million, three hundred seventy-five thousand, two hundred seventeen".