3881725 has 6 divisors (see below), whose sum is σ = 4813370. Its totient is φ = 3105360.

The previous prime is 3881723. The next prime is 3881741. The reversal of 3881725 is 5271883.

It can be written as a sum of positive squares in 3 ways, for example, as 47961 + 3833764 = 219^2 + 1958^2 .

It is not a de Polignac number, because 3881725 - 2¹ = 3881723 is a prime.

3881725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77610 + ... + 77659.

Almost surely, 2^3881725 is an apocalyptic number.

It is an amenable number.

3881725 is a deficient number, since it is larger than the sum of its proper divisors (931645).

3881725 is a wasteful number, since it uses less digits than its factorization.

3881725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155279 (or 155274 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 3881725 is about 1970.2093797361. The cubic root of 3881725 is about 157.1598436970.

The spelling of 3881725 in words is "three million, eight hundred eighty-one thousand, seven hundred twenty-five".