28525188487 has 2 divisors, whose sum is σ = 28525188488. Its totient is φ = 28525188486.

The previous prime is 28525188479. The next prime is 28525188499. The reversal of 28525188487 is 78488152582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28525188487 - 2³ = 28525188479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28525188457) 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 as a sum of consecutive naturals, namely, 14262594243 + 14262594244.

It is an arithmetic number, because the mean of its divisors is an integer number (14262594244).

Almost surely, 2^28525188487 is an apocalyptic number.

28525188487 is a deficient number, since it is larger than the sum of its proper divisors (1).

28525188487 is an equidigital number, since it uses as much as digits as its factorization.

28525188487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11468800, while the sum is 58.

The spelling of 28525188487 in words is "twenty-eight billion, five hundred twenty-five million, one hundred eighty-eight thousand, four hundred eighty-seven".