285115525 has 48 divisors (see below), whose sum is σ = 383292928. Its totient is φ = 209952000.

The previous prime is 285115513. The next prime is 285115529. The reversal of 285115525 is 525511582.

It is not a de Polignac number, because 285115525 - 2⁹ = 285115013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285115529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1749094 + ... + 1749256.

Almost surely, 2^285115525 is an apocalyptic number.

285115525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285115525 is a deficient number, since it is larger than the sum of its proper divisors (98177403).

285115525 is a wasteful number, since it uses less digits than its factorization.

285115525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 297 counting only the distinct ones).

The product of its digits is 20000, while the sum is 34.

The square root of 285115525 is about 16885.3642246769. The cubic root of 285115525 is about 658.1733428803.

The spelling of 285115525 in words is "two hundred eighty-five million, one hundred fifteen thousand, five hundred twenty-five".