205555256 has 16 divisors (see below), whose sum is σ = 385569240. Its totient is φ = 102736800.

The previous prime is 205555247. The next prime is 205555261. The reversal of 205555256 is 652555502.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33206 + ... + 38906.

Almost surely, 2^205555256 is an apocalyptic number.

It is an amenable number.

205555256 is a deficient number, since it is larger than the sum of its proper divisors (180013984).

205555256 is a wasteful number, since it uses less digits than its factorization.

205555256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10214 (or 10210 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The square root of 205555256 is about 14337.1983316128. The cubic root of 205555256 is about 590.1687308275.

The spelling of 205555256 in words is "two hundred five million, five hundred fifty-five thousand, two hundred fifty-six".