285025 has 12 divisors (see below), whose sum is σ = 381052. Its totient is φ = 210240.

The previous prime is 285023. The next prime is 285031. The reversal of 285025 is 520582.

It can be written as a sum of positive squares in 6 ways, for example, as 6241 + 278784 = 79^2 + 528^2 .

It is not a de Polignac number, because 285025 - 2¹ = 285023 is a prime.

It is a Duffinian number.

285025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 284987 and 285005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114 + ... + 763.

2²⁸⁵⁰²⁵ is an apocalyptic number.

285025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285025 is a deficient number, since it is larger than the sum of its proper divisors (96027).

285025 is a wasteful number, since it uses less digits than its factorization.

285025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 285025 is about 533.8773267334. The cubic root of 285025 is about 65.8103678197.

The spelling of 285025 in words is "two hundred eighty-five thousand, twenty-five".