3961225 has 6 divisors (see below), whose sum is σ = 4911950. Its totient is φ = 3168960.

The previous prime is 3961213. The next prime is 3961229. The reversal of 3961225 is 5221693.

3961225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 36864 + 3924361 = 192^2 + 1981^2 .

It is not a de Polignac number, because 3961225 - 2⁵ = 3961193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3961193 and 3961202.

It is not an unprimeable number, because it can be changed into a prime (3961229) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 79200 + ... + 79249.

Almost surely, 2^3961225 is an apocalyptic number.

It is an amenable number.

3961225 is a deficient number, since it is larger than the sum of its proper divisors (950725).

3961225 is a wasteful number, since it uses less digits than its factorization.

3961225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158459 (or 158454 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 3961225 is about 1990.2826432444. The cubic root of 3961225 is about 158.2255098463.

It can be divided in two parts, 3961 and 225, that added together give a triangular number (4186 = T₉₁).

The spelling of 3961225 in words is "three million, nine hundred sixty-one thousand, two hundred twenty-five".