865425 has 24 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 419200.

The previous prime is 865409. The next prime is 865457. The reversal of 865425 is 524568.

It is not a de Polignac number, because 865425 - 2⁴ = 865409 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 865392 and 865401.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 865425.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301 + ... + 1349.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2⁸⁶⁵⁴²⁵ is an apocalyptic number.

It is an amenable number.

865425 is a deficient number, since it is larger than the sum of its proper divisors (696975).

865425 is a wasteful number, since it uses less digits than its factorization.

865425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1068 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 865425 is about 930.2822152444. The cubic root of 865425 is about 95.2963965448.

The spelling of 865425 in words is "eight hundred sixty-five thousand, four hundred twenty-five".