255566205 has 16 divisors (see below), whose sum is σ = 454340160. Its totient is φ = 136301904.

The previous prime is 255566189. The next prime is 255566261. The reversal of 255566205 is 502665552.

255566205 is a `hidden beast` number, since 25 + 5 + 5 + 6 + 620 + 5 = 666.

It is not a de Polignac number, because 255566205 - 2⁴ = 255566189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255566205.

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, 946407 + ... + 946676.

It is an arithmetic number, because the mean of its divisors is an integer number (28396260).

Almost surely, 2^255566205 is an apocalyptic number.

It is an amenable number.

255566205 is a deficient number, since it is larger than the sum of its proper divisors (198773955).

255566205 is a wasteful number, since it uses less digits than its factorization.

255566205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893097 (or 1893091 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 255566205 is about 15986.4381586393. The cubic root of 255566205 is about 634.6015687266.

The spelling of 255566205 in words is "two hundred fifty-five million, five hundred sixty-six thousand, two hundred five".