4005254531 has 4 divisors (see below), whose sum is σ = 4007502672. Its totient is φ = 4003006392.

The previous prime is 4005254503. The next prime is 4005254567. The reversal of 4005254531 is 1354525004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4005254531 - 2¹⁰ = 4005253507 is a prime.

It is a super-2 number, since 2×4005254531² = 32084127716192059922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4005254494 and 4005254503.

It is not an unprimeable number, because it can be changed into a prime (4005254581) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1121396 + ... + 1124961.

It is an arithmetic number, because the mean of its divisors is an integer number (1001875668).

Almost surely, 2^4005254531 is an apocalyptic number.

4005254531 is a deficient number, since it is larger than the sum of its proper divisors (2248141).

4005254531 is a wasteful number, since it uses less digits than its factorization.

4005254531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248140.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 4005254531 is about 63287.0802849997. The cubic root of 4005254531 is about 1588.0958351634.

Adding to 4005254531 its reverse (1354525004), we get a palindrome (5359779535).

The spelling of 4005254531 in words is "four billion, five million, two hundred fifty-four thousand, five hundred thirty-one".