205975955 has 12 divisors (see below), whose sum is σ = 251312256. Its totient is φ = 162064800.

The previous prime is 205975933. The next prime is 205975981. The reversal of 205975955 is 559579502.

205975955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205975955 - 2⁸ = 205975699 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13070 + ... + 24140.

It is an arithmetic number, because the mean of its divisors is an integer number (20942688).

Almost surely, 2^205975955 is an apocalyptic number.

205975955 is a deficient number, since it is larger than the sum of its proper divisors (45336301).

205975955 is an equidigital number, since it uses as much as digits as its factorization.

205975955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11198 (or 11137 counting only the distinct ones).

The product of its (nonzero) digits is 708750, while the sum is 47.

The square root of 205975955 is about 14351.8624226962. The cubic root of 205975955 is about 590.5710787723.

The spelling of 205975955 in words is "two hundred five million, nine hundred seventy-five thousand, nine hundred fifty-five".