205155255 has 32 divisors (see below), whose sum is σ = 346371840. Its totient is φ = 103403520.

The previous prime is 205155227. The next prime is 205155257. The reversal of 205155255 is 552551502.

It is not a de Polignac number, because 205155255 - 2⁹ = 205154743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205155257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182124 + ... + 183246.

It is an arithmetic number, because the mean of its divisors is an integer number (10824120).

Almost surely, 2^205155255 is an apocalyptic number.

205155255 is a deficient number, since it is larger than the sum of its proper divisors (141216585).

205155255 is a wasteful number, since it uses less digits than its factorization.

205155255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 205155255 is about 14323.2417769163. The cubic root of 205155255 is about 589.7856685815.

The spelling of 205155255 in words is "two hundred five million, one hundred fifty-five thousand, two hundred fifty-five".