28255502563 has 2 divisors, whose sum is σ = 28255502564. Its totient is φ = 28255502562.

The previous prime is 28255502543. The next prime is 28255502591. The reversal of 28255502563 is 36520555282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28255502563 - 2¹⁷ = 28255371491 is a prime.

It is not a weakly prime, because it can be changed into another prime (28255502543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14127751281 + 14127751282.

It is an arithmetic number, because the mean of its divisors is an integer number (14127751282).

Almost surely, 2^28255502563 is an apocalyptic number.

28255502563 is a deficient number, since it is larger than the sum of its proper divisors (1).

28255502563 is an equidigital number, since it uses as much as digits as its factorization.

28255502563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 28255502563 in words is "twenty-eight billion, two hundred fifty-five million, five hundred two thousand, five hundred sixty-three".