285725 has 12 divisors (see below), whose sum is σ = 386880. Its totient is φ = 207600.

The previous prime is 285721. The next prime is 285731. The reversal of 285725 is 527582.

It is not a de Polignac number, because 285725 - 2² = 285721 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 8⁴ + 7⁵ + 5 + 2¹⁸ + 5⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285721) 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, 245 + ... + 794.

It is an arithmetic number, because the mean of its divisors is an integer number (32240).

2²⁸⁵⁷²⁵ is an apocalyptic number.

285725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285725 is a deficient number, since it is larger than the sum of its proper divisors (101155).

285725 is a wasteful number, since it uses less digits than its factorization.

285725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1055 counting only the distinct ones).

The product of its digits is 5600, while the sum is 29.

The square root of 285725 is about 534.5325060275. The cubic root of 285725 is about 65.8641988827.

It can be divided in two parts, 2857 and 25, that added together give a palindrome (2882).

The spelling of 285725 in words is "two hundred eighty-five thousand, seven hundred twenty-five".