20015375125 has 8 divisors (see below), whose sum is σ = 24979188312. Its totient is φ = 16012300000.

The previous prime is 20015375117. The next prime is 20015375129. The reversal of 20015375125 is 52157351002.

It can be written as a sum of positive squares in 4 ways, for example, as 183412849 + 19831962276 = 13543^2 + 140826^2 .

It is not a de Polignac number, because 20015375125 - 2³ = 20015375117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015375129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80061376 + ... + 80061625.

It is an arithmetic number, because the mean of its divisors is an integer number (3122398539).

Almost surely, 2^20015375125 is an apocalyptic number.

20015375125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20015375125 is a deficient number, since it is larger than the sum of its proper divisors (4963813187).

20015375125 is an equidigital number, since it uses as much as digits as its factorization.

20015375125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160123016 (or 160123006 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The spelling of 20015375125 in words is "twenty billion, fifteen million, three hundred seventy-five thousand, one hundred twenty-five".