3945425 has 12 divisors (see below), whose sum is σ = 5337456. Its totient is φ = 2869200.

The previous prime is 3945413. The next prime is 3945427. The reversal of 3945425 is 5245493.

3945425 = T₃₇₂ + T₃₇₃ + ... + T₄₂₁.

It is a happy number.

It is not a de Polignac number, because 3945425 - 2²⁰ = 2896849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3945391 and 3945400.

It is not an unprimeable number, because it can be changed into a prime (3945427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6899 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (444788).

Almost surely, 2^3945425 is an apocalyptic number.

It is an amenable number.

3945425 is a deficient number, since it is larger than the sum of its proper divisors (1392031).

3945425 is a wasteful number, since it uses less digits than its factorization.

3945425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14368 (or 14363 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 3945425 is about 1986.3093918119. The cubic root of 3945425 is about 158.0148600028.

The spelling of 3945425 in words is "three million, nine hundred forty-five thousand, four hundred twenty-five".