205525020080 has 80 divisors (see below), whose sum is σ = 508181328480. Its totient is φ = 77080190976.

The previous prime is 205525020079. The next prime is 205525020131. The reversal of 205525020080 is 80020525502.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549539 + ... + 844418.

It is an arithmetic number, because the mean of its divisors is an integer number (6352266606).

Almost surely, 2^205525020080 is an apocalyptic number.

205525020080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205525020080 is an abundant number, since it is smaller than the sum of its proper divisors (302656308400).

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

205525020080 is a wasteful number, since it uses less digits than its factorization.

205525020080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394086 (or 1394080 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 205525020080 its reverse (80020525502), we get a palindrome (285545545582).

The spelling of 205525020080 in words is "two hundred five billion, five hundred twenty-five million, twenty thousand, eighty".