4125609 has 6 divisors (see below), whose sum is σ = 5959226. Its totient is φ = 2750400.

The previous prime is 4125601. The next prime is 4125619. The reversal of 4125609 is 9065214.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 205209 = 1980^2 + 453^2 .

It is not a de Polignac number, because 4125609 - 2³ = 4125601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4125601) 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, 229192 + ... + 229209.

Almost surely, 2^4125609 is an apocalyptic number.

It is an amenable number.

4125609 is a deficient number, since it is larger than the sum of its proper divisors (1833617).

4125609 is a wasteful number, since it uses less digits than its factorization.

4125609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458407 (or 458404 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 4125609 is about 2031.1595210618. The cubic root of 4125609 is about 160.3846085898.

The spelling of 4125609 in words is "four million, one hundred twenty-five thousand, six hundred nine".