205265564 has 12 divisors (see below), whose sum is σ = 410531184. Its totient is φ = 87970944.

The previous prime is 205265563. The next prime is 205265581. The reversal of 205265564 is 465562502.

205265564 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205265563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665429 + ... + 3665484.

It is an arithmetic number, because the mean of its divisors is an integer number (34210932).

Almost surely, 2^205265564 is an apocalyptic number.

It is an amenable number.

205265564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205265564 is a wasteful number, since it uses less digits than its factorization.

205265564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330924 (or 7330922 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 205265564 is about 14327.0919589427. The cubic root of 205265564 is about 589.8913560366.

The spelling of 205265564 in words is "two hundred five million, two hundred sixty-five thousand, five hundred sixty-four".