525285 has 20 divisors (see below), whose sum is σ = 942348. Its totient is φ = 279936.

The previous prime is 525257. The next prime is 525299. The reversal of 525285 is 582525.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 116964 = 639^2 + 342^2 .

It is not a de Polignac number, because 525285 - 2⁵ = 525253 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 525285.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 244 + ... + 1053.

2⁵²⁵²⁸⁵ is an apocalyptic number.

It is an amenable number.

525285 is a deficient number, since it is larger than the sum of its proper divisors (417063).

525285 is a wasteful number, since it uses less digits than its factorization.

525285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1305 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 525285 is about 724.7654793104. The cubic root of 525285 is about 80.6860273483.

The spelling of 525285 in words is "five hundred twenty-five thousand, two hundred eighty-five".