425798251717 has 2 divisors, whose sum is σ = 425798251718. Its totient is φ = 425798251716.

The previous prime is 425798251687. The next prime is 425798251751. The reversal of 425798251717 is 717152897524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249466285156 + 176331966561 = 499466^2 + 419919^2 .

It is a cyclic number.

It is not a de Polignac number, because 425798251717 - 2³¹ = 423650768069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425798251217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212899125858 + 212899125859.

It is an arithmetic number, because the mean of its divisors is an integer number (212899125859).

Almost surely, 2^425798251717 is an apocalyptic number.

It is an amenable number.

425798251717 is a deficient number, since it is larger than the sum of its proper divisors (1).

425798251717 is an equidigital number, since it uses as much as digits as its factorization.

425798251717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9878400, while the sum is 58.

The spelling of 425798251717 in words is "four hundred twenty-five billion, seven hundred ninety-eight million, two hundred fifty-one thousand, seven hundred seventeen".