285525 has 36 divisors (see below), whose sum is σ = 541632. Its totient is φ = 149040.

The previous prime is 285521. The next prime is 285533. The reversal of 285525 is 525582.

It is not a de Polignac number, because 285525 - 2² = 285521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

285525 is a lucky 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 285525.

It is not an unprimeable number, because it can be changed into a prime (285521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6052 + ... + 6098.

2²⁸⁵⁵²⁵ is an apocalyptic number.

285525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285525 is a deficient number, since it is larger than the sum of its proper divisors (256107).

285525 is an equidigital number, since it uses as much as digits as its factorization.

285525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 55 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 285525 is about 534.3453939167. The cubic root of 285525 is about 65.8488275589.

The spelling of 285525 in words is "two hundred eighty-five thousand, five hundred twenty-five".