4005312505 has 16 divisors (see below), whose sum is σ = 4921565184. Its totient is φ = 3127816000.

The previous prime is 4005312481. The next prime is 4005312511. The reversal of 4005312505 is 5052135004.

It is not a de Polignac number, because 4005312505 - 2¹¹ = 4005310457 is a prime.

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 4005312505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67755 + ... + 112255.

It is an arithmetic number, because the mean of its divisors is an integer number (307597824).

Almost surely, 2^4005312505 is an apocalyptic number.

It is an amenable number.

4005312505 is a deficient number, since it is larger than the sum of its proper divisors (916252679).

4005312505 is a wasteful number, since it uses less digits than its factorization.

4005312505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44936.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 4005312505 is about 63287.5383073161. The cubic root of 4005312505 is about 1588.1034974166.

Adding to 4005312505 its reverse (5052135004), we get a palindrome (9057447509).

The spelling of 4005312505 in words is "four billion, five million, three hundred twelve thousand, five hundred five".