40890625 has 14 divisors (see below), whose sum is σ = 51132158. Its totient is φ = 32700000.

The previous prime is 40890607. The next prime is 40890677. The reversal of 40890625 is 52609804.

It is a happy number.

40890625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 7 ways, for example, as 37736449 + 3154176 = 6143^2 + 1776^2 .

It is not a de Polignac number, because 40890625 - 2¹¹ = 40888577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 14317 + ... + 16933.

It is an arithmetic number, because the mean of its divisors is an integer number (3652297).

Almost surely, 2^40890625 is an apocalyptic number.

It is an amenable number.

40890625 is a deficient number, since it is larger than the sum of its proper divisors (10241533).

40890625 is an frugal number, since it uses more digits than its factorization.

40890625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 40890625 is about 6394.5777812143. The cubic root of 40890625 is about 344.5148259654.

The spelling of 40890625 in words is "forty million, eight hundred ninety thousand, six hundred twenty-five".