425767985317 has 2 divisors, whose sum is σ = 425767985318. Its totient is φ = 425767985316.

The previous prime is 425767985249. The next prime is 425767985323. The reversal of 425767985317 is 713589767524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328404640356 + 97363344961 = 573066^2 + 312031^2 .

It is a cyclic number.

It is not a de Polignac number, because 425767985317 - 2⁷ = 425767985189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425767985347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212883992658 + 212883992659.

It is an arithmetic number, because the mean of its divisors is an integer number (212883992659).

Almost surely, 2^425767985317 is an apocalyptic number.

It is an amenable number.

425767985317 is a deficient number, since it is larger than the sum of its proper divisors (1).

425767985317 is an equidigital number, since it uses as much as digits as its factorization.

425767985317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88905600, while the sum is 64.

The spelling of 425767985317 in words is "four hundred twenty-five billion, seven hundred sixty-seven million, nine hundred eighty-five thousand, three hundred seventeen".