225606617 has 2 divisors, whose sum is σ = 225606618. Its totient is φ = 225606616.

The previous prime is 225606599. The next prime is 225606653. The reversal of 225606617 is 716606522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179854921 + 45751696 = 13411^2 + 6764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225606617 is a prime.

It is not a weakly prime, because it can be changed into another prime (225606217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112803308 + 112803309.

It is an arithmetic number, because the mean of its divisors is an integer number (112803309).

Almost surely, 2^225606617 is an apocalyptic number.

It is an amenable number.

225606617 is a deficient number, since it is larger than the sum of its proper divisors (1).

225606617 is an equidigital number, since it uses as much as digits as its factorization.

225606617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 225606617 is about 15020.2069559644. The cubic root of 225606617 is about 608.7663116020.

The spelling of 225606617 in words is "two hundred twenty-five million, six hundred six thousand, six hundred seventeen".