3981525 has 12 divisors (see below), whose sum is σ = 6582912. Its totient is φ = 2123440.

The previous prime is 3981517. The next prime is 3981539. The reversal of 3981525 is 5251893.

3981525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3981525 - 2³ = 3981517 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 26469 + ... + 26618.

It is an arithmetic number, because the mean of its divisors is an integer number (548576).

Almost surely, 2^3981525 is an apocalyptic number.

It is an amenable number.

3981525 is a deficient number, since it is larger than the sum of its proper divisors (2601387).

3981525 is a wasteful number, since it uses less digits than its factorization.

3981525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53100 (or 53095 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 3981525 is about 1995.3759044351. The cubic root of 3981525 is about 158.4953343437.

The spelling of 3981525 in words is "three million, nine hundred eighty-one thousand, five hundred twenty-five".