4090925 has 6 divisors (see below), whose sum is σ = 5072778. Its totient is φ = 3272720.

The previous prime is 4090921. The next prime is 4090937. The reversal of 4090925 is 5290904.

It can be written as a sum of positive squares in 3 ways, for example, as 454276 + 3636649 = 674^2 + 1907^2 .

It is not a de Polignac number, because 4090925 - 2² = 4090921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81794 + ... + 81843.

It is an arithmetic number, because the mean of its divisors is an integer number (845463).

Almost surely, 2^4090925 is an apocalyptic number.

It is an amenable number.

4090925 is a deficient number, since it is larger than the sum of its proper divisors (981853).

4090925 is a wasteful number, since it uses less digits than its factorization.

4090925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163647 (or 163642 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 4090925 is about 2022.6035202184. The cubic root of 4090925 is about 159.9338919604.

The spelling of 4090925 in words is "four million, ninety thousand, nine hundred twenty-five".