225657077717 has 2 divisors, whose sum is σ = 225657077718. Its totient is φ = 225657077716.

The previous prime is 225657077713. The next prime is 225657077783. The reversal of 225657077717 is 717770756522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139432040836 + 86225036881 = 373406^2 + 293641^2 .

It is a cyclic number.

It is not a de Polignac number, because 225657077717 - 2² = 225657077713 is a prime.

It is a super-2 number, since 2×225657077717² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225657077713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112828538858 + 112828538859.

It is an arithmetic number, because the mean of its divisors is an integer number (112828538859).

Almost surely, 2^225657077717 is an apocalyptic number.

It is an amenable number.

225657077717 is a deficient number, since it is larger than the sum of its proper divisors (1).

225657077717 is an equidigital number, since it uses as much as digits as its factorization.

225657077717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10084200, while the sum is 56.

The spelling of 225657077717 in words is "two hundred twenty-five billion, six hundred fifty-seven million, seventy-seven thousand, seven hundred seventeen".