20601725875 has 16 divisors (see below), whose sum is σ = 25775133696. Its totient is φ = 16440240000.

The previous prime is 20601725867. The next prime is 20601725909. The reversal of 20601725875 is 57852710602.

It is not a de Polignac number, because 20601725875 - 2³ = 20601725867 is a prime.

It is a super-2 number, since 2×20601725875² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 155379 + ... + 255628.

It is an arithmetic number, because the mean of its divisors is an integer number (1610945856).

Almost surely, 2^20601725875 is an apocalyptic number.

20601725875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20601725875 is a deficient number, since it is larger than the sum of its proper divisors (5173407821).

20601725875 is an equidigital number, since it uses as much as digits as its factorization.

20601725875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411423 (or 411413 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 20601725875 in words is "twenty billion, six hundred one million, seven hundred twenty-five thousand, eight hundred seventy-five".