205225503065 has 32 divisors (see below), whose sum is σ = 279319968000. Its totient is φ = 143383806720.

The previous prime is 205225502957. The next prime is 205225503071. The reversal of 205225503065 is 560305522502.

205225503065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-205225503065 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5882 + ... + 640691.

It is an arithmetic number, because the mean of its divisors is an integer number (8728749000).

Almost surely, 2^205225503065 is an apocalyptic number.

It is an amenable number.

205225503065 is a deficient number, since it is larger than the sum of its proper divisors (74094464935).

205225503065 is a wasteful number, since it uses less digits than its factorization.

205225503065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646817.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 205225503065 in words is "two hundred five billion, two hundred twenty-five million, five hundred three thousand, sixty-five".