3128878825 has 12 divisors (see below), whose sum is σ = 4004965888. Its totient is φ = 2422357200.

The previous prime is 3128878799. The next prime is 3128878861. The reversal of 3128878825 is 5288788213.

It is not a de Polignac number, because 3128878825 - 2⁵ = 3128878793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2017857 + ... + 2019406.

Almost surely, 2^3128878825 is an apocalyptic number.

It is an amenable number.

3128878825 is a deficient number, since it is larger than the sum of its proper divisors (876087063).

3128878825 is a wasteful number, since it uses less digits than its factorization.

3128878825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037304 (or 4037299 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 3128878825 is about 55936.3819441336. The cubic root of 3128878825 is about 1462.6135125083.

The spelling of 3128878825 in words is "three billion, one hundred twenty-eight million, eight hundred seventy-eight thousand, eight hundred twenty-five".