3125688878 has 16 divisors (see below), whose sum is σ = 5113106880. Its totient is φ = 1424363616.

The previous prime is 3125688869. The next prime is 3125688931. The reversal of 3125688878 is 8788865213.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 758825 + ... + 762932.

It is an arithmetic number, because the mean of its divisors is an integer number (319569180).

Almost surely, 2^3125688878 is an apocalyptic number.

3125688878 is a deficient number, since it is larger than the sum of its proper divisors (1987418002).

3125688878 is a wasteful number, since it uses less digits than its factorization.

3125688878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521851.

The product of its digits is 5160960, while the sum is 56.

The square root of 3125688878 is about 55907.8606101146. The cubic root of 3125688878 is about 1462.1162900930.

The spelling of 3125688878 in words is "three billion, one hundred twenty-five million, six hundred eighty-eight thousand, eight hundred seventy-eight".