205041065 has 16 divisors (see below), whose sum is σ = 259749120. Its totient is φ = 154949760.

The previous prime is 205041061. The next prime is 205041073. The reversal of 205041065 is 560140502.

205041065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205041065 - 2² = 205041061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205041065.

It is not an unprimeable number, because it can be changed into a prime (205041061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31925 + ... + 37805.

It is an arithmetic number, because the mean of its divisors is an integer number (16234320).

Almost surely, 2^205041065 is an apocalyptic number.

It is an amenable number.

205041065 is a deficient number, since it is larger than the sum of its proper divisors (54708055).

205041065 is a wasteful number, since it uses less digits than its factorization.

205041065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 205041065 is about 14319.2550434721. The cubic root of 205041065 is about 589.6762228113.

Adding to 205041065 its reverse (560140502), we get a palindrome (765181567).

The spelling of 205041065 in words is "two hundred five million, forty-one thousand, sixty-five".