425775 has 24 divisors (see below), whose sum is σ = 805504. Its totient is φ = 194400.

The previous prime is 425713. The next prime is 425779. The reversal of 425775 is 577524.

It is not a de Polignac number, because 425775 - 2⁸ = 425519 is a prime.

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

425775 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120 + ... + 930.

2⁴²⁵⁷⁷⁵ is an apocalyptic number.

425775 is a deficient number, since it is larger than the sum of its proper divisors (379729).

425775 is a wasteful number, since it uses less digits than its factorization.

425775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 826 counting only the distinct ones).

The product of its digits is 9800, while the sum is 30.

The square root of 425775 is about 652.5143676579. The cubic root of 425775 is about 75.2304025816.

The spelling of 425775 in words is "four hundred twenty-five thousand, seven hundred seventy-five".