20125051205 has 16 divisors (see below), whose sum is σ = 27608376960. Its totient is φ = 13795881792.

The previous prime is 20125051189. The next prime is 20125051223. The reversal of 20125051205 is 50215052102.

It is not a de Polignac number, because 20125051205 - 2⁴ = 20125051189 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 15 ways as a sum of consecutive naturals, for example, 33782 + ... + 203448.

It is an arithmetic number, because the mean of its divisors is an integer number (1725523560).

Almost surely, 2^20125051205 is an apocalyptic number.

It is an amenable number.

20125051205 is a deficient number, since it is larger than the sum of its proper divisors (7483325755).

20125051205 is a wasteful number, since it uses less digits than its factorization.

20125051205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173068.

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 20125051205 in words is "twenty billion, one hundred twenty-five million, fifty-one thousand, two hundred five".