425317657 has 2 divisors, whose sum is σ = 425317658. Its totient is φ = 425317656.

The previous prime is 425317643. The next prime is 425317661. The reversal of 425317657 is 756713524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284563161 + 140754496 = 16869^2 + 11864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425317657 is a prime.

It is not a weakly prime, because it can be changed into another prime (425311657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212658828 + 212658829.

It is an arithmetic number, because the mean of its divisors is an integer number (212658829).

Almost surely, 2^425317657 is an apocalyptic number.

It is an amenable number.

425317657 is a deficient number, since it is larger than the sum of its proper divisors (1).

425317657 is an equidigital number, since it uses as much as digits as its factorization.

425317657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 176400, while the sum is 40.

The square root of 425317657 is about 20623.2310029248. The cubic root of 425317657 is about 752.0345687529.

The spelling of 425317657 in words is "four hundred twenty-five million, three hundred seventeen thousand, six hundred fifty-seven".