4005520405 has 8 divisors (see below), whose sum is σ = 4816260000. Its totient is φ = 3197992656.

The previous prime is 4005520373. The next prime is 4005520417. The reversal of 4005520405 is 5040255004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4005520405 - 2⁵ = 4005520373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4005520405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800215 + ... + 805204.

It is an arithmetic number, because the mean of its divisors is an integer number (602032500).

Almost surely, 2^4005520405 is an apocalyptic number.

It is an amenable number.

4005520405 is a deficient number, since it is larger than the sum of its proper divisors (810739595).

4005520405 is a wasteful number, since it uses less digits than its factorization.

4005520405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605923.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 4005520405 is about 63289.1807894525. The cubic root of 4005520405 is about 1588.1309743409.

Adding to 4005520405 its reverse (5040255004), we get a palindrome (9045775409).

The spelling of 4005520405 in words is "four billion, five million, five hundred twenty thousand, four hundred five".