40805625 has 40 divisors (see below), whose sum is σ = 77725120. Its totient is φ = 18648000.

The previous prime is 40805599. The next prime is 40805647. The reversal of 40805625 is 52650804.

It is not a de Polignac number, because 40805625 - 2¹¹ = 40803577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40805592 and 40805601.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11571 + ... + 14679.

It is an arithmetic number, because the mean of its divisors is an integer number (1943128).

Almost surely, 2^40805625 is an apocalyptic number.

It is an amenable number.

40805625 is a deficient number, since it is larger than the sum of its proper divisors (36919495).

40805625 is an equidigital number, since it uses as much as digits as its factorization.

40805625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3124 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 40805625 is about 6387.9280678480. The cubic root of 40805625 is about 344.2759441960.

The spelling of 40805625 in words is "forty million, eight hundred five thousand, six hundred twenty-five".