3825881 has 4 divisors (see below), whose sum is σ = 3829812. Its totient is φ = 3821952.

The previous prime is 3825869. The next prime is 3825893. The reversal of 3825881 is 1885283.

3825881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1885283 = 17 ⋅110899.

It is an interprime number because it is at equal distance from previous prime (3825869) and next prime (3825893).

It can be written as a sum of positive squares in 2 ways, for example, as 990025 + 2835856 = 995^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 3825881 - 2⁶ = 3825817 is a prime.

It is a super-2 number, since 2×3825881² = 29274730852322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701 + ... + 2853.

It is an arithmetic number, because the mean of its divisors is an integer number (957453).

Almost surely, 2^3825881 is an apocalyptic number.

It is an amenable number.

3825881 is a deficient number, since it is larger than the sum of its proper divisors (3931).

3825881 is a wasteful number, since it uses less digits than its factorization.

3825881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930.

The product of its digits is 15360, while the sum is 35.

The square root of 3825881 is about 1955.9859406448. The cubic root of 3825881 is about 156.4025462745.

The spelling of 3825881 in words is "three million, eight hundred twenty-five thousand, eight hundred eighty-one".