205000995 has 16 divisors (see below), whose sum is σ = 335630592. Its totient is φ = 106790880.

The previous prime is 205000973. The next prime is 205000997. The reversal of 205000995 is 599000502.

It is not a de Polignac number, because 205000995 - 2⁵ = 205000963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205000997) 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, 158271 + ... + 159560.

It is an arithmetic number, because the mean of its divisors is an integer number (20976912).

Almost surely, 2^205000995 is an apocalyptic number.

205000995 is a deficient number, since it is larger than the sum of its proper divisors (130629597).

205000995 is a wasteful number, since it uses less digits than its factorization.

205000995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317882.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 205000995 is about 14317.8558101414. The cubic root of 205000995 is about 589.6378079608.

The spelling of 205000995 in words is "two hundred five million, nine hundred ninety-five", and thus it is an aban number.