205085085 has 16 divisors (see below), whose sum is σ = 330644160. Its totient is φ = 108542720.

The previous prime is 205085053. The next prime is 205085113. The reversal of 205085085 is 580580502.

It is not a de Polignac number, because 205085085 - 2⁵ = 205085053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50220 + ... + 54149.

It is an arithmetic number, because the mean of its divisors is an integer number (20665260).

Almost surely, 2^205085085 is an apocalyptic number.

It is an amenable number.

205085085 is a deficient number, since it is larger than the sum of its proper divisors (125559075).

205085085 is a wasteful number, since it uses less digits than its factorization.

205085085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104508.

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 205085085 is about 14320.7920521178. The cubic root of 205085085 is about 589.7184187327.

The spelling of 205085085 in words is "two hundred five million, eighty-five thousand, eighty-five".