205063257 has 16 divisors (see below), whose sum is σ = 328924160. Its totient is φ = 111011472.

The previous prime is 205063211. The next prime is 205063277. The reversal of 205063257 is 752360502.

It is not a de Polignac number, because 205063257 - 2¹⁰ = 205062233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205063207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256573 + ... + 257370.

It is an arithmetic number, because the mean of its divisors is an integer number (20557760).

Almost surely, 2^205063257 is an apocalyptic number.

It is an amenable number.

205063257 is a deficient number, since it is larger than the sum of its proper divisors (123860903).

205063257 is a wasteful number, since it uses less digits than its factorization.

205063257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513972.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 205063257 is about 14320.0299231531. The cubic root of 205063257 is about 589.6974959852.

The spelling of 205063257 in words is "two hundred five million, sixty-three thousand, two hundred fifty-seven".