205055015 has 8 divisors (see below), whose sum is σ = 268435728. Its totient is φ = 149130880.

The previous prime is 205054991. The next prime is 205055017. The reversal of 205055015 is 510550502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205055015 - 2⁶ = 205054951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205055017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1864082 + ... + 1864191.

It is an arithmetic number, because the mean of its divisors is an integer number (33554466).

Almost surely, 2^205055015 is an apocalyptic number.

205055015 is a deficient number, since it is larger than the sum of its proper divisors (63380713).

205055015 is a wasteful number, since it uses less digits than its factorization.

205055015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728289.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 205055015 is about 14319.7421415331. The cubic root of 205055015 is about 589.6895954119.

The spelling of 205055015 in words is "two hundred five million, fifty-five thousand, fifteen".