205015525055 has 8 divisors (see below), whose sum is σ = 268383960144. Its totient is φ = 149102200000.

The previous prime is 205015525049. The next prime is 205015525153. The reversal of 205015525055 is 550525510502.

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

It is not a de Polignac number, because 205015525055 - 2⁸ = 205015524799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863777446 + ... + 1863777555.

It is an arithmetic number, because the mean of its divisors is an integer number (33547995018).

Almost surely, 2^205015525055 is an apocalyptic number.

205015525055 is a deficient number, since it is larger than the sum of its proper divisors (63368435089).

205015525055 is a wasteful number, since it uses less digits than its factorization.

205015525055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727555017.

The product of its (nonzero) digits is 62500, while the sum is 35.

The spelling of 205015525055 in words is "two hundred five billion, fifteen million, five hundred twenty-five thousand, fifty-five".