205265117 has 4 divisors (see below), whose sum is σ = 206296800. Its totient is φ = 204233436.

The previous prime is 205265107. The next prime is 205265149. The reversal of 205265117 is 711562502.

205265117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205265117 - 2⁸ = 205264861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205265117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205265107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515543 + ... + 515940.

It is an arithmetic number, because the mean of its divisors is an integer number (51574200).

Almost surely, 2^205265117 is an apocalyptic number.

It is an amenable number.

205265117 is a deficient number, since it is larger than the sum of its proper divisors (1031683).

205265117 is a wasteful number, since it uses less digits than its factorization.

205265117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031682.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 205265117 is about 14327.0763591181. The cubic root of 205265117 is about 589.8909278407.

The spelling of 205265117 in words is "two hundred five million, two hundred sixty-five thousand, one hundred seventeen".