225666421317413 has 2 divisors, whose sum is σ = 225666421317414. Its totient is φ = 225666421317412.

The previous prime is 225666421317313. The next prime is 225666421317451. The reversal of 225666421317413 is 314713124666522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203147381868484 + 22519039448929 = 14252978^2 + 4745423^2 .

It is a cyclic number.

It is not a de Polignac number, because 225666421317413 - 2⁸ = 225666421317157 is a prime.

It is a super-3 number, since 3×225666421317413³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225666421317313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112833210658706 + 112833210658707.

It is an arithmetic number, because the mean of its divisors is an integer number (112833210658707).

Almost surely, 2^{225666421317413} is an apocalyptic number.

It is an amenable number.

225666421317413 is a deficient number, since it is larger than the sum of its proper divisors (1).

225666421317413 is an equidigital number, since it uses as much as digits as its factorization.

225666421317413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 53.

The spelling of 225666421317413 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, four hundred twenty-one million, three hundred seventeen thousand, four hundred thirteen".