425250434857 has 2 divisors, whose sum is σ = 425250434858. Its totient is φ = 425250434856.

The previous prime is 425250434831. The next prime is 425250434891. The reversal of 425250434857 is 758434052524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 410322238096 + 14928196761 = 640564^2 + 122181^2 .

It is a cyclic number.

It is not a de Polignac number, because 425250434857 - 2³¹ = 423102951209 is a prime.

It is a super-2 number, since 2×425250434857² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425250434857.

It is not a weakly prime, because it can be changed into another prime (425250434057) 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, 212625217428 + 212625217429.

It is an arithmetic number, because the mean of its divisors is an integer number (212625217429).

Almost surely, 2^425250434857 is an apocalyptic number.

It is an amenable number.

425250434857 is a deficient number, since it is larger than the sum of its proper divisors (1).

425250434857 is an equidigital number, since it uses as much as digits as its factorization.

425250434857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376000, while the sum is 49.

The spelling of 425250434857 in words is "four hundred twenty-five billion, two hundred fifty million, four hundred thirty-four thousand, eight hundred fifty-seven".