285525513 has 64 divisors (see below), whose sum is σ = 527564800. Its totient is φ = 148599360.

The previous prime is 285525481. The next prime is 285525529. The reversal of 285525513 is 315525582.

285525513 is a `hidden beast` number, since 2 + 85 + 525 + 51 + 3 = 666.

It is not a de Polignac number, because 285525513 - 2⁵ = 285525481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285525533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193368 + ... + 194838.

It is an arithmetic number, because the mean of its divisors is an integer number (8243200).

Almost surely, 2^285525513 is an apocalyptic number.

It is an amenable number.

285525513 is a deficient number, since it is larger than the sum of its proper divisors (242039287).

285525513 is a wasteful number, since it uses less digits than its factorization.

285525513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579 (or 1573 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 285525513 is about 16897.5001997337. The cubic root of 285525513 is about 658.4886699552.

The spelling of 285525513 in words is "two hundred eighty-five million, five hundred twenty-five thousand, five hundred thirteen".