4000252505 has 16 divisors (see below), whose sum is σ = 4849723200. Its totient is φ = 3167398080.

The previous prime is 4000252499. The next prime is 4000252513. The reversal of 4000252505 is 5052520004.

It is not a de Polignac number, because 4000252505 - 2¹⁰ = 4000251481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221351 + ... + 238739.

It is an arithmetic number, because the mean of its divisors is an integer number (303107700).

Almost surely, 2^4000252505 is an apocalyptic number.

It is an amenable number.

4000252505 is a deficient number, since it is larger than the sum of its proper divisors (849470695).

4000252505 is a wasteful number, since it uses less digits than its factorization.

4000252505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17864.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 4000252505 is about 63247.5493991664. The cubic root of 4000252505 is about 1587.4344534906.

Adding to 4000252505 its reverse (5052520004), we get a palindrome (9052772509).

The spelling of 4000252505 in words is "four billion, two hundred fifty-two thousand, five hundred five".