285000525 has 30 divisors (see below), whose sum is σ = 527923242. Its totient is φ = 151999200.

The previous prime is 285000509. The next prime is 285000619. The reversal of 285000525 is 525000582.

It can be written as a sum of positive squares in 3 ways, for example, as 16990884 + 268009641 = 4122^2 + 16371^2 .

It is not a de Polignac number, because 285000525 - 2⁴ = 285000509 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 68346 + ... + 72395.

Almost surely, 2^285000525 is an apocalyptic number.

285000525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285000525 is a deficient number, since it is larger than the sum of its proper divisors (242922717).

285000525 is a wasteful number, since it uses less digits than its factorization.

285000525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140763 (or 140749 counting only the distinct ones).

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

The square root of 285000525 is about 16881.9585652850. The cubic root of 285000525 is about 658.0848406108.

The spelling of 285000525 in words is "two hundred eighty-five million, five hundred twenty-five", and thus it is an aban number.