40384825 has 24 divisors (see below), whose sum is σ = 54237848. Its totient is φ = 29652480.

The previous prime is 40384801. The next prime is 40384831. The reversal of 40384825 is 52848304.

It can be written as a sum of positive squares in 12 ways, for example, as 28440889 + 11943936 = 5333^2 + 3456^2 .

It is not a de Polignac number, because 40384825 - 2¹⁵ = 40352057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101527 + ... + 101923.

Almost surely, 2^40384825 is an apocalyptic number.

It is an amenable number.

40384825 is a deficient number, since it is larger than the sum of its proper divisors (13853023).

40384825 is a wasteful number, since it uses less digits than its factorization.

40384825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 40384825 is about 6354.9055854513. The cubic root of 40384825 is about 343.0884267419.

It can be divided in two parts, 40384 and 825, that added together give a square (41209 = 203²).

The spelling of 40384825 in words is "forty million, three hundred eighty-four thousand, eight hundred twenty-five".