3931825 has 6 divisors (see below), whose sum is σ = 4875494. Its totient is φ = 3145440.

The previous prime is 3931817. The next prime is 3931831. The reversal of 3931825 is 5281393.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 74529 + 3857296 = 273^2 + 1964^2 .

It is not a de Polignac number, because 3931825 - 2³ = 3931817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78612 + ... + 78661.

Almost surely, 2^3931825 is an apocalyptic number.

It is an amenable number.

3931825 is a deficient number, since it is larger than the sum of its proper divisors (943669).

3931825 is a wasteful number, since it uses less digits than its factorization.

3931825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157283 (or 157278 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 3931825 is about 1982.8830020957. The cubic root of 3931825 is about 157.8330903108.

The spelling of 3931825 in words is "three million, nine hundred thirty-one thousand, eight hundred twenty-five".