225655332317 has 2 divisors, whose sum is σ = 225655332318. Its totient is φ = 225655332316.

The previous prime is 225655332299. The next prime is 225655332389. The reversal of 225655332317 is 713233556522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210918829081 + 14736503236 = 459259^2 + 121394^2 .

It is a cyclic number.

It is not a de Polignac number, because 225655332317 - 2¹⁴ = 225655315933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225655332517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112827666158 + 112827666159.

It is an arithmetic number, because the mean of its divisors is an integer number (112827666159).

Almost surely, 2^225655332317 is an apocalyptic number.

It is an amenable number.

225655332317 is a deficient number, since it is larger than the sum of its proper divisors (1).

225655332317 is an equidigital number, since it uses as much as digits as its factorization.

225655332317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 44.

Adding to 225655332317 its reverse (713233556522), we get a palindrome (938888888839).

The spelling of 225655332317 in words is "two hundred twenty-five billion, six hundred fifty-five million, three hundred thirty-two thousand, three hundred seventeen".