425919 has 16 divisors (see below), whose sum is σ = 624512. Its totient is φ = 256608.

The previous prime is 425911. The next prime is 425939. The reversal of 425919 is 919524.

It is a happy number.

It is not a de Polignac number, because 425919 - 2³ = 425911 is a prime.

It is a super-2 number, since 2×425919² = 362813989122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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 425919.

It is not an unprimeable number, because it can be changed into a prime (425911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532 + ... + 2694.

It is an arithmetic number, because the mean of its divisors is an integer number (39032).

2⁴²⁵⁹¹⁹ is an apocalyptic number.

425919 is a deficient number, since it is larger than the sum of its proper divisors (198593).

425919 is a wasteful number, since it uses less digits than its factorization.

425919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its digits is 3240, while the sum is 30.

The square root of 425919 is about 652.6247007278. The cubic root of 425919 is about 75.2388827703.

It can be divided in two parts, 4259 and 19, that added together give a triangular number (4278 = T₉₂).

The spelling of 425919 in words is "four hundred twenty-five thousand, nine hundred nineteen".