6881881388825 has 6 divisors (see below), whose sum is σ = 8533532922174. Its totient is φ = 5505505111040.

The previous prime is 6881881388813. The next prime is 6881881388849. The reversal of 6881881388825 is 5288831881886.

It can be written as a sum of positive squares in 3 ways, for example, as 314634611929 + 6567246776896 = 560923^2 + 2562664^2 .

It is not a de Polignac number, because 6881881388825 - 2¹⁴ = 6881881372441 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 137637627752 + ... + 137637627801.

It is an arithmetic number, because the mean of its divisors is an integer number (1422255487029).

Almost surely, 2^{6881881388825} is an apocalyptic number.

It is an amenable number.

6881881388825 is a deficient number, since it is larger than the sum of its proper divisors (1651651533349).

6881881388825 is a wasteful number, since it uses less digits than its factorization.

6881881388825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275275255563 (or 275275255558 counting only the distinct ones).

The product of its digits is 377487360, while the sum is 74.

The spelling of 6881881388825 in words is "six trillion, eight hundred eighty-one billion, eight hundred eighty-one million, three hundred eighty-eight thousand, eight hundred twenty-five".