285485265 has 24 divisors (see below), whose sum is σ = 532906920. Its totient is φ = 140546304.

The previous prime is 285485257. The next prime is 285485297. The reversal of 285485265 is 562584582.

It is a happy number.

285485265 is a `hidden beast` number, since 2 + 85 + 48 + 526 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13927824 + 271557441 = 3732^2 + 16479^2 .

It is not a de Polignac number, because 285485265 - 2³ = 285485257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 285485265.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243420 + ... + 244589.

It is an arithmetic number, because the mean of its divisors is an integer number (22204455).

Almost surely, 2^285485265 is an apocalyptic number.

It is an amenable number.

285485265 is a deficient number, since it is larger than the sum of its proper divisors (247421655).

285485265 is a wasteful number, since it uses less digits than its factorization.

285485265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488033 (or 488030 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 285485265 is about 16896.3092123694. The cubic root of 285485265 is about 658.4577280648.

The spelling of 285485265 in words is "two hundred eighty-five million, four hundred eighty-five thousand, two hundred sixty-five".