205945085 has 24 divisors (see below), whose sum is σ = 264663936. Its totient is φ = 153790560.

The previous prime is 205945067. The next prime is 205945111. The reversal of 205945085 is 580549502.

It is not a de Polignac number, because 205945085 - 2¹² = 205940989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127352 + ... + 128958.

It is an arithmetic number, because the mean of its divisors is an integer number (11027664).

Almost surely, 2^205945085 is an apocalyptic number.

It is an amenable number.

205945085 is a deficient number, since it is larger than the sum of its proper divisors (58718851).

205945085 is a wasteful number, since it uses less digits than its factorization.

205945085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 205945085 is about 14350.7869122219. The cubic root of 205945085 is about 590.5415739691.

The spelling of 205945085 in words is "two hundred five million, nine hundred forty-five thousand, eighty-five".