285925 has 6 divisors (see below), whose sum is σ = 354578. Its totient is φ = 228720.

The previous prime is 285871. The next prime is 285937. The reversal of 285925 is 529582.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6084 + 279841 = 78^2 + 529^2 .

It is not a de Polignac number, because 285925 - 2¹⁵ = 253157 is a prime.

It is a Duffinian number.

285925 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5694 + ... + 5743.

2²⁸⁵⁹²⁵ is an apocalyptic number.

285925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285925 is a deficient number, since it is larger than the sum of its proper divisors (68653).

285925 is a wasteful number, since it uses less digits than its factorization.

285925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11447 (or 11442 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 285925 is about 534.7195526629. The cubic root of 285925 is about 65.8795630352.

The spelling of 285925 in words is "two hundred eighty-five thousand, nine hundred twenty-five".