205534425560 has 32 divisors (see below), whose sum is σ = 477370281600. Its totient is φ = 79561712640.

The previous prime is 205534425557. The next prime is 205534425599. The reversal of 205534425560 is 65524435502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82875545 + ... + 82878024.

It is an arithmetic number, because the mean of its divisors is an integer number (14917821300).

Almost surely, 2^205534425560 is an apocalyptic number.

205534425560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205534425560 is an abundant number, since it is smaller than the sum of its proper divisors (271835856040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205534425560 is a wasteful number, since it uses less digits than its factorization.

205534425560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165753611 (or 165753607 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 41.

The spelling of 205534425560 in words is "two hundred five billion, five hundred thirty-four million, four hundred twenty-five thousand, five hundred sixty".