20966380125 has 128 divisors (see below), whose sum is σ = 37645171200. Its totient is φ = 10341632000.

The previous prime is 20966380121. The next prime is 20966380139. The reversal of 20966380125 is 52108366902.

It is not a de Polignac number, because 20966380125 - 2² = 20966380121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966380121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26306227 + ... + 26307023.

It is an arithmetic number, because the mean of its divisors is an integer number (294102900).

Almost surely, 2^20966380125 is an apocalyptic number.

20966380125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20966380125 is a deficient number, since it is larger than the sum of its proper divisors (16678791075).

20966380125 is a wasteful number, since it uses less digits than its factorization.

20966380125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 20966380125 in words is "twenty billion, nine hundred sixty-six million, three hundred eighty thousand, one hundred twenty-five".