3981125 has 8 divisors (see below), whose sum is σ = 4968600. Its totient is φ = 3184800.

The previous prime is 3981119. The next prime is 3981137. The reversal of 3981125 is 5211893.

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 3806401 = 418^2 + 1951^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3981125 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15800 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (621075).

Almost surely, 2^3981125 is an apocalyptic number.

It is an amenable number.

3981125 is a deficient number, since it is larger than the sum of its proper divisors (987475).

3981125 is an equidigital number, since it uses as much as digits as its factorization.

3981125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31864 (or 31854 counting only the distinct ones).

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

The square root of 3981125 is about 1995.2756701769. The cubic root of 3981125 is about 158.4900264732.

The spelling of 3981125 in words is "three million, nine hundred eighty-one thousand, one hundred twenty-five".