285325 has 12 divisors (see below), whose sum is σ = 360468. Its totient is φ = 224000.

The previous prime is 285317. The next prime is 285343. The reversal of 285325 is 523582.

285325 = T₄₇ + T₄₈ + ... + T₁₂₁.

It can be written as a sum of positive squares in 6 ways, for example, as 8649 + 276676 = 93^2 + 526^2 .

It is not a de Polignac number, because 285325 - 2³ = 285317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2469 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (30039).

2²⁸⁵³²⁵ is an apocalyptic number.

285325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285325 is a deficient number, since it is larger than the sum of its proper divisors (75143).

285325 is a wasteful number, since it uses less digits than its factorization.

285325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 219 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 285325 is about 534.1582162618. The cubic root of 285325 is about 65.8334490553.

The spelling of 285325 in words is "two hundred eighty-five thousand, three hundred twenty-five".