3881525 has 12 divisors (see below), whose sum is σ = 5096772. Its totient is φ = 2922240.

The previous prime is 3881509. The next prime is 3881543. The reversal of 3881525 is 5251883.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 106276 + 3775249 = 326^2 + 1943^2 .

It is not a de Polignac number, because 3881525 - 2⁴ = 3881509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3881491 and 3881500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4142 + ... + 4991.

It is an arithmetic number, because the mean of its divisors is an integer number (424731).

Almost surely, 2^3881525 is an apocalyptic number.

It is an amenable number.

3881525 is a deficient number, since it is larger than the sum of its proper divisors (1215247).

3881525 is a wasteful number, since it uses less digits than its factorization.

3881525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9160 (or 9155 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 3881525 is about 1970.1586230555. The cubic root of 3881525 is about 157.1571445097.

The spelling of 3881525 in words is "three million, eight hundred eighty-one thousand, five hundred twenty-five".