40820125 has 8 divisors (see below), whose sum is σ = 50943672. Its totient is φ = 32656000.

The previous prime is 40820119. The next prime is 40820141. The reversal of 40820125 is 52102804.

It can be written as a sum of positive squares in 4 ways, for example, as 700569 + 40119556 = 837^2 + 6334^2 .

It is not a de Polignac number, because 40820125 - 2⁵ = 40820093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40820096 and 40820105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163156 + ... + 163405.

It is an arithmetic number, because the mean of its divisors is an integer number (6367959).

Almost surely, 2^40820125 is an apocalyptic number.

It is an amenable number.

40820125 is a deficient number, since it is larger than the sum of its proper divisors (10123547).

40820125 is an equidigital number, since it uses as much as digits as its factorization.

40820125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326576 (or 326566 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 40820125 is about 6389.0629203350. The cubic root of 40820125 is about 344.3167180682.

Adding to 40820125 its reverse (52102804), we get a palindrome (92922929).

The spelling of 40820125 in words is "forty million, eight hundred twenty thousand, one hundred twenty-five".