205256164 has 24 divisors (see below), whose sum is σ = 400347360. Its totient is φ = 91506816.

The previous prime is 205256143. The next prime is 205256173. The reversal of 205256164 is 461652502.

205256164 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78142 + ... + 80725.

It is an arithmetic number, because the mean of its divisors is an integer number (16681140).

Almost surely, 2^205256164 is an apocalyptic number.

It is an amenable number.

205256164 is a deficient number, since it is larger than the sum of its proper divisors (195091196).

205256164 is a wasteful number, since it uses less digits than its factorization.

205256164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158907 (or 158905 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 205256164 is about 14326.7639053626. The cubic root of 205256164 is about 589.8823513384.

The spelling of 205256164 in words is "two hundred five million, two hundred fifty-six thousand, one hundred sixty-four".