425839 has 2 divisors, whose sum is σ = 425840. Its totient is φ = 425838.

The previous prime is 425837. The next prime is 425851. The reversal of 425839 is 938524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425839 - 2¹ = 425837 is a prime.

Together with 425837, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 425839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212919 + 212920.

It is an arithmetic number, because the mean of its divisors is an integer number (212920).

2⁴²⁵⁸³⁹ is an apocalyptic number.

425839 is a deficient number, since it is larger than the sum of its proper divisors (1).

425839 is an equidigital number, since it uses as much as digits as its factorization.

425839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 425839 is about 652.5634068809. The cubic root of 425839 is about 75.2341717904.

The spelling of 425839 in words is "four hundred twenty-five thousand, eight hundred thirty-nine".