205152715 has 16 divisors (see below), whose sum is σ = 250968960. Its totient is φ = 160963200.

The previous prime is 205152707. The next prime is 205152721. The reversal of 205152715 is 517251502.

205152715 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 205152715 - 2³ = 205152707 is a prime.

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, 53182 + ... + 56908.

It is an arithmetic number, because the mean of its divisors is an integer number (15685560).

Almost surely, 2^205152715 is an apocalyptic number.

205152715 is a deficient number, since it is larger than the sum of its proper divisors (45816245).

205152715 is a wasteful number, since it uses less digits than its factorization.

205152715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 205152715 is about 14323.1531095636. The cubic root of 205152715 is about 589.7832345521.

The spelling of 205152715 in words is "two hundred five million, one hundred fifty-two thousand, seven hundred fifteen".