285000025 has 12 divisors (see below), whose sum is σ = 354094524. Its totient is φ = 227552000.

The previous prime is 285000013. The next prime is 285000119. The reversal of 285000025 is 520000582.

It can be written as a sum of positive squares in 6 ways, for example, as 91317136 + 193682889 = 9556^2 + 13917^2 .

It is not a de Polignac number, because 285000025 - 2⁵ = 284999993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2085 + ... + 23965.

It is an arithmetic number, because the mean of its divisors is an integer number (29507877).

Almost surely, 2^285000025 is an apocalyptic number.

285000025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285000025 is a deficient number, since it is larger than the sum of its proper divisors (69094499).

285000025 is a wasteful number, since it uses less digits than its factorization.

285000025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22412 (or 22407 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 285000025 is about 16881.9437565702. The cubic root of 285000025 is about 658.0844557664.

The spelling of 285000025 in words is "two hundred eighty-five million, twenty-five", and thus it is an aban number.