210205185255 has 24 divisors (see below), whose sum is σ = 392383013568. Its totient is φ = 103485629376.

The previous prime is 210205185233. The next prime is 210205185293. The reversal of 210205185255 is 552581502012.

210205185255 is a `hidden beast` number, since 21 + 0 + 20 + 518 + 52 + 55 = 666.

210205185255 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 210205185255 - 2¹¹ = 210205183207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179661967 + ... + 179663136.

It is an arithmetic number, because the mean of its divisors is an integer number (16349292232).

Almost surely, 2^210205185255 is an apocalyptic number.

210205185255 is a deficient number, since it is larger than the sum of its proper divisors (182177828313).

210205185255 is a wasteful number, since it uses less digits than its factorization.

210205185255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359325127 (or 359325124 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

Adding to 210205185255 its reverse (552581502012), we get a palindrome (762786687267).

The spelling of 210205185255 in words is "two hundred ten billion, two hundred five million, one hundred eighty-five thousand, two hundred fifty-five".