425909 has 8 divisors (see below), whose sum is σ = 480000. Its totient is φ = 374400.

The previous prime is 425903. The next prime is 425911. The reversal of 425909 is 909524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425909 - 2⁸ = 425653 is a prime.

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 425909.

It is not an unprimeable number, because it can be changed into a prime (425903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2⁴²⁵⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

425909 is a deficient number, since it is larger than the sum of its proper divisors (54091).

425909 is a wasteful number, since it uses less digits than its factorization.

425909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 425909 is about 652.6170393117. The cubic root of 425909 is about 75.2382939300.

The spelling of 425909 in words is "four hundred twenty-five thousand, nine hundred nine".