3811925 has 24 divisors (see below), whose sum is σ = 5244456. Its totient is φ = 2730240.

The previous prime is 3811921. The next prime is 3811939. The reversal of 3811925 is 5291183.

3811925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1868689 + 1943236 = 1367^2 + 1394^2 .

It is not a de Polignac number, because 3811925 - 2² = 3811921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811921) 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 23 ways as a sum of consecutive naturals, for example, 11867 + ... + 12183.

It is an arithmetic number, because the mean of its divisors is an integer number (218519).

Almost surely, 2^3811925 is an apocalyptic number.

It is an amenable number.

3811925 is a deficient number, since it is larger than the sum of its proper divisors (1432531).

3811925 is a wasteful number, since it uses less digits than its factorization.

3811925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 372 counting only the distinct ones).

The product of its digits is 2160, while the sum is 29.

The square root of 3811925 is about 1952.4151710126. The cubic root of 3811925 is about 156.2121401605.

The spelling of 3811925 in words is "three million, eight hundred eleven thousand, nine hundred twenty-five".