3125881 has 16 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 2665600.

The previous prime is 3125873. The next prime is 3125893. The reversal of 3125881 is 1885213.

It is a cyclic number.

It is not a de Polignac number, because 3125881 - 2³ = 3125873 is a prime.

It is a super-2 number, since 2×3125881² = 19542264052322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (1920) is a multiple of the sum of its prime divisors (320).

It is not an unprimeable number, because it can be changed into a prime (3125821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12960 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

Almost surely, 2^3125881 is an apocalyptic number.

It is an amenable number.

3125881 is a deficient number, since it is larger than the sum of its proper divisors (502919).

3125881 is a wasteful number, since it uses less digits than its factorization.

3125881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320.

The product of its digits is 1920, while the sum is 28.

The square root of 3125881 is about 1768.0161198360. The cubic root of 3125881 is about 146.2146246044.

The spelling of 3125881 in words is "three million, one hundred twenty-five thousand, eight hundred eighty-one".