425234857 has 2 divisors, whose sum is σ = 425234858. Its totient is φ = 425234856.

The previous prime is 425234851. The next prime is 425234867. The reversal of 425234857 is 758432524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425225641 + 9216 = 20621^2 + 96^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425234857 is a prime.

It is not a weakly prime, because it can be changed into another prime (425234851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212617428 + 212617429.

It is an arithmetic number, because the mean of its divisors is an integer number (212617429).

Almost surely, 2^425234857 is an apocalyptic number.

It is an amenable number.

425234857 is a deficient number, since it is larger than the sum of its proper divisors (1).

425234857 is an equidigital number, since it uses as much as digits as its factorization.

425234857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 40.

The square root of 425234857 is about 20621.2234603090. The cubic root of 425234857 is about 751.9857640517.

The spelling of 425234857 in words is "four hundred twenty-five million, two hundred thirty-four thousand, eight hundred fifty-seven".