28252442591 has 2 divisors, whose sum is σ = 28252442592. Its totient is φ = 28252442590.

The previous prime is 28252442567. The next prime is 28252442599. The reversal of 28252442591 is 19524425282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28252442591 - 2¹⁸ = 28252180447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28252442599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126221295 + 14126221296.

It is an arithmetic number, because the mean of its divisors is an integer number (14126221296).

Almost surely, 2^28252442591 is an apocalyptic number.

28252442591 is a deficient number, since it is larger than the sum of its proper divisors (1).

28252442591 is an equidigital number, since it uses as much as digits as its factorization.

28252442591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 44.

The spelling of 28252442591 in words is "twenty-eight billion, two hundred fifty-two million, four hundred forty-two thousand, five hundred ninety-one".