20875420875 has 32 divisors (see below), whose sum is σ = 34783916544. Its totient is φ = 11118424800.

The previous prime is 20875420843. The next prime is 20875420883. The reversal of 20875420875 is 57802457802.

It is not a de Polignac number, because 20875420875 - 2⁵ = 20875420843 is a prime.

20875420875 is a modest number, since divided by 420875 gives 20875 as remainder.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 241164 + ... + 316086.

It is an arithmetic number, because the mean of its divisors is an integer number (1086997392).

Almost surely, 2^20875420875 is an apocalyptic number.

20875420875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20875420875 is a deficient number, since it is larger than the sum of its proper divisors (13908495669).

20875420875 is an equidigital number, since it uses as much as digits as its factorization.

20875420875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75684 (or 75674 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 48.

The spelling of 20875420875 in words is "twenty billion, eight hundred seventy-five million, four hundred twenty thousand, eight hundred seventy-five".