205006165 has 16 divisors (see below), whose sum is σ = 302779008. Its totient is φ = 129761856.

The previous prime is 205006157. The next prime is 205006171. The reversal of 205006165 is 561600502.

It is not a de Polignac number, because 205006165 - 2³ = 205006157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224827 + ... + 225736.

It is an arithmetic number, because the mean of its divisors is an integer number (18923688).

Almost surely, 2^205006165 is an apocalyptic number.

It is an amenable number.

205006165 is a deficient number, since it is larger than the sum of its proper divisors (97772843).

205006165 is a wasteful number, since it uses less digits than its factorization.

205006165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450588.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 205006165 is about 14318.0363527964. The cubic root of 205006165 is about 589.6427646877.

Adding to 205006165 its reverse (561600502), we get a palindrome (766606667).

The spelling of 205006165 in words is "two hundred five million, six thousand, one hundred sixty-five".