20012501205 has 48 divisors (see below), whose sum is σ = 36005598720. Its totient is φ = 10271836800.

The previous prime is 20012501191. The next prime is 20012501291. The reversal of 20012501205 is 50210521002.

It is not a de Polignac number, because 20012501205 - 2⁷ = 20012501077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 212866 + ... + 292124.

It is an arithmetic number, because the mean of its divisors is an integer number (750116640).

Almost surely, 2^20012501205 is an apocalyptic number.

It is an amenable number.

20012501205 is a deficient number, since it is larger than the sum of its proper divisors (15993097515).

20012501205 is a wasteful number, since it uses less digits than its factorization.

20012501205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79482 (or 79479 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The spelling of 20012501205 in words is "twenty billion, twelve million, five hundred one thousand, two hundred five".