425879 has 2 divisors, whose sum is σ = 425880. Its totient is φ = 425878.

The previous prime is 425869. The next prime is 425899. The reversal of 425879 is 978524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 425879 - 2¹² = 421783 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 2¹⁷ + 8⁵ + 5⁷ + 7⁶ + 9³ .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425879.

It is not a weakly prime, because it can be changed into another prime (425819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212939 + 212940.

It is an arithmetic number, because the mean of its divisors is an integer number (212940).

2⁴²⁵⁸⁷⁹ is an apocalyptic number.

425879 is a deficient number, since it is larger than the sum of its proper divisors (1).

425879 is an equidigital number, since it uses as much as digits as its factorization.

425879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 425879 is about 652.5940545239. The cubic root of 425879 is about 75.2365273541.

The spelling of 425879 in words is "four hundred twenty-five thousand, eight hundred seventy-nine".