285854925 has 24 divisors (see below), whose sum is σ = 493164864. Its totient is φ = 145826560.

The previous prime is 285854923. The next prime is 285854957. The reversal of 285854925 is 529458582.

It is not a de Polignac number, because 285854925 - 2¹ = 285854923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285854923) 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 23 ways as a sum of consecutive naturals, for example, 81132 + ... + 84581.

It is an arithmetic number, because the mean of its divisors is an integer number (20548536).

Almost surely, 2^285854925 is an apocalyptic number.

285854925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

285854925 is a deficient number, since it is larger than the sum of its proper divisors (207309939).

285854925 is a wasteful number, since it uses less digits than its factorization.

285854925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165749 (or 165744 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 48.

The square root of 285854925 is about 16907.2447489235. The cubic root of 285854925 is about 658.7418063593.

The spelling of 285854925 in words is "two hundred eighty-five million, eight hundred fifty-four thousand, nine hundred twenty-five".