205255387030 has 32 divisors (see below), whose sum is σ = 370303000704. Its totient is φ = 81914971776.

The previous prime is 205255387009. The next prime is 205255387039. The reversal of 205255387030 is 30783552502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205255387039) 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, 8060899 + ... + 8086321.

It is an arithmetic number, because the mean of its divisors is an integer number (11571968772).

Almost surely, 2^205255387030 is an apocalyptic number.

205255387030 is a deficient number, since it is larger than the sum of its proper divisors (165047613674).

205255387030 is a wasteful number, since it uses less digits than its factorization.

205255387030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27240.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 205255387030 in words is "two hundred five billion, two hundred fifty-five million, three hundred eighty-seven thousand, thirty".