40016725 has 24 divisors (see below), whose sum is σ = 60049728. Its totient is φ = 25824000.

The previous prime is 40016719. The next prime is 40016731. The reversal of 40016725 is 52761004.

40016725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40016719) and next prime (40016731).

It is not a de Polignac number, because 40016725 - 2⁹ = 40016213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40016725.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 3751 + ... + 9700.

It is an arithmetic number, because the mean of its divisors is an integer number (2502072).

Almost surely, 2^40016725 is an apocalyptic number.

It is an amenable number.

40016725 is a deficient number, since it is larger than the sum of its proper divisors (20033003).

40016725 is a wasteful number, since it uses less digits than its factorization.

40016725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13485 (or 13480 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 40016725 is about 6325.8774094982. The cubic root of 40016725 is about 342.0428482730.

Adding to 40016725 its reverse (52761004), we get a palindrome (92777729).

The spelling of 40016725 in words is "forty million, sixteen thousand, seven hundred twenty-five".