3966425 has 6 divisors (see below), whose sum is σ = 4918398. Its totient is φ = 3173120.

The previous prime is 3966409. The next prime is 3966433. The reversal of 3966425 is 5246693.

It can be written as a sum of positive squares in 3 ways, for example, as 755161 + 3211264 = 869^2 + 1792^2 .

It is not a de Polignac number, because 3966425 - 2⁴ = 3966409 is a prime.

It is a Duffinian number.

It is a Curzon 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, 79304 + ... + 79353.

It is an arithmetic number, because the mean of its divisors is an integer number (819733).

Almost surely, 2^3966425 is an apocalyptic number.

It is an amenable number.

3966425 is a deficient number, since it is larger than the sum of its proper divisors (951973).

3966425 is a wasteful number, since it uses less digits than its factorization.

3966425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158667 (or 158662 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 3966425 is about 1991.5885619274. The cubic root of 3966425 is about 158.2947151122.

The spelling of 3966425 in words is "three million, nine hundred sixty-six thousand, four hundred twenty-five".