425857 has 2 divisors, whose sum is σ = 425858. Its totient is φ = 425856.

The previous prime is 425851. The next prime is 425861. The reversal of 425857 is 758524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389376 + 36481 = 624^2 + 191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425857 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁷ + 2¹⁷ + 8⁶ + 5⁴ + 5⁶ + 7 .

It is not a weakly prime, because it can be changed into another prime (425851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212928 + 212929.

It is an arithmetic number, because the mean of its divisors is an integer number (212929).

2⁴²⁵⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

425857 is a deficient number, since it is larger than the sum of its proper divisors (1).

425857 is an equidigital number, since it uses as much as digits as its factorization.

425857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 425857 is about 652.5771984984. The cubic root of 425857 is about 75.2352318123.

The spelling of 425857 in words is "four hundred twenty-five thousand, eight hundred fifty-seven".