287725 has 12 divisors (see below), whose sum is σ = 378324. Its totient is φ = 216320.

The previous prime is 287701. The next prime is 287731. The reversal of 287725 is 527782.

It can be written as a sum of positive squares in 6 ways, for example, as 35721 + 252004 = 189^2 + 502^2 .

It is not a de Polignac number, because 287725 - 2⁷ = 287597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87 + ... + 763.

It is an arithmetic number, because the mean of its divisors is an integer number (31527).

2²⁸⁷⁷²⁵ is an apocalyptic number.

287725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287725 is a deficient number, since it is larger than the sum of its proper divisors (90599).

287725 is a wasteful number, since it uses less digits than its factorization.

287725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 699 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 287725 is about 536.4000372856. The cubic root of 287725 is about 66.0175190714.

The spelling of 287725 in words is "two hundred eighty-seven thousand, seven hundred twenty-five".