225665107313 has 2 divisors, whose sum is σ = 225665107314. Its totient is φ = 225665107312.

The previous prime is 225665107301. The next prime is 225665107351. The reversal of 225665107313 is 313701566522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162350973184 + 63314134129 = 402928^2 + 251623^2 .

It is a cyclic number.

It is not a de Polignac number, because 225665107313 - 2¹⁴ = 225665090929 is a prime.

It is not a weakly prime, because it can be changed into another prime (225665107363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112832553656 + 112832553657.

It is an arithmetic number, because the mean of its divisors is an integer number (112832553657).

Almost surely, 2^225665107313 is an apocalyptic number.

It is an amenable number.

225665107313 is a deficient number, since it is larger than the sum of its proper divisors (1).

225665107313 is an equidigital number, since it uses as much as digits as its factorization.

225665107313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 225665107313 in words is "two hundred twenty-five billion, six hundred sixty-five million, one hundred seven thousand, three hundred thirteen".