4091825 has 6 divisors (see below), whose sum is σ = 5073894. Its totient is φ = 3273440.

The previous prime is 4091809. The next prime is 4091831. The reversal of 4091825 is 5281904.

It can be written as a sum of positive squares in 3 ways, for example, as 43681 + 4048144 = 209^2 + 2012^2 .

It is not a de Polignac number, because 4091825 - 2⁴ = 4091809 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, 81812 + ... + 81861.

It is an arithmetic number, because the mean of its divisors is an integer number (845649).

Almost surely, 2^4091825 is an apocalyptic number.

It is an amenable number.

4091825 is a deficient number, since it is larger than the sum of its proper divisors (982069).

4091825 is a wasteful number, since it uses less digits than its factorization.

4091825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163683 (or 163678 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 4091825 is about 2022.8259935051. The cubic root of 4091825 is about 159.9456195402.

The spelling of 4091825 in words is "four million, ninety-one thousand, eight hundred twenty-five".