425805 has 8 divisors (see below), whose sum is σ = 681312. Its totient is φ = 227088.

The previous prime is 425801. The next prime is 425813. The reversal of 425805 is 508524.

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

It is not a de Polignac number, because 425805 - 2² = 425801 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14179 + ... + 14208.

It is an arithmetic number, because the mean of its divisors is an integer number (85164).

2⁴²⁵⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

425805 is a deficient number, since it is larger than the sum of its proper divisors (255507).

425805 is a wasteful number, since it uses less digits than its factorization.

425805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28395.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 425805 is about 652.5373552526. The cubic root of 425805 is about 75.2321694453.

The spelling of 425805 in words is "four hundred twenty-five thousand, eight hundred five".