425966705321 has 2 divisors, whose sum is σ = 425966705322. Its totient is φ = 425966705320.

The previous prime is 425966705251. The next prime is 425966705347. The reversal of 425966705321 is 123507669524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382927053721 + 43039651600 = 618811^2 + 207460^2 .

It is a cyclic number.

It is not a de Polignac number, because 425966705321 - 2¹⁰ = 425966704297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425966705321.

It is not a weakly prime, because it can be changed into another prime (425966755321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212983352660 + 212983352661.

It is an arithmetic number, because the mean of its divisors is an integer number (212983352661).

Almost surely, 2^425966705321 is an apocalyptic number.

It is an amenable number.

425966705321 is a deficient number, since it is larger than the sum of its proper divisors (1).

425966705321 is an equidigital number, since it uses as much as digits as its factorization.

425966705321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 425966705321 in words is "four hundred twenty-five billion, nine hundred sixty-six million, seven hundred five thousand, three hundred twenty-one".