225666020256293 has 2 divisors, whose sum is σ = 225666020256294. Its totient is φ = 225666020256292.

The previous prime is 225666020256199. The next prime is 225666020256371. The reversal of 225666020256293 is 392652020666522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225537410517409 + 128609738884 = 15017903^2 + 358622^2 .

It is a cyclic number.

It is not a de Polignac number, because 225666020256293 - 2²² = 225666016061989 is a prime.

It is a super-2 number, since 2×225666020256293² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225666020856293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112833010128146 + 112833010128147.

It is an arithmetic number, because the mean of its divisors is an integer number (112833010128147).

Almost surely, 2^{225666020256293} is an apocalyptic number.

It is an amenable number.

225666020256293 is a deficient number, since it is larger than the sum of its proper divisors (1).

225666020256293 is an equidigital number, since it uses as much as digits as its factorization.

225666020256293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 225666020256293 in words is "two hundred twenty-five trillion, six hundred sixty-six billion, twenty million, two hundred fifty-six thousand, two hundred ninety-three".