28522750489 has 2 divisors, whose sum is σ = 28522750490. Its totient is φ = 28522750488.

The previous prime is 28522750463. The next prime is 28522750493. The reversal of 28522750489 is 98405722582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21914361225 + 6608389264 = 148035^2 + 81292^2 .

It is a cyclic number.

It is not a de Polignac number, because 28522750489 - 2¹⁷ = 28522619417 is a prime.

It is not a weakly prime, because it can be changed into another prime (28522754489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14261375244 + 14261375245.

It is an arithmetic number, because the mean of its divisors is an integer number (14261375245).

Almost surely, 2^28522750489 is an apocalyptic number.

It is an amenable number.

28522750489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28522750489 is an equidigital number, since it uses as much as digits as its factorization.

28522750489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 28522750489 in words is "twenty-eight billion, five hundred twenty-two million, seven hundred fifty thousand, four hundred eighty-nine".