285875 has 8 divisors (see below), whose sum is σ = 356928. Its totient is φ = 228600.

The previous prime is 285871. The next prime is 285937. The reversal of 285875 is 578582.

It is not a de Polignac number, because 285875 - 2² = 285871 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285875.

It is not an unprimeable number, because it can be changed into a prime (285871) 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, 1019 + ... + 1268.

It is an arithmetic number, because the mean of its divisors is an integer number (44616).

2²⁸⁵⁸⁷⁵ is an apocalyptic number.

285875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285875 is a deficient number, since it is larger than the sum of its proper divisors (71053).

285875 is an equidigital number, since it uses as much as digits as its factorization.

285875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2292 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 285875 is about 534.6727971386. The cubic root of 285875 is about 65.8757226690.

The spelling of 285875 in words is "two hundred eighty-five thousand, eight hundred seventy-five".