28267527625 has 16 divisors (see below), whose sum is σ = 35286265872. Its totient is φ = 22608643200.

The previous prime is 28267527623. The next prime is 28267527637. The reversal of 28267527625 is 52672576282.

It can be written as a sum of positive squares in 8 ways, for example, as 15226572816 + 13040954809 = 123396^2 + 114197^2 .

It is not a de Polignac number, because 28267527625 - 2¹ = 28267527623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28267527623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550029 + ... + 599221.

It is an arithmetic number, because the mean of its divisors is an integer number (2205391617).

Almost surely, 2^28267527625 is an apocalyptic number.

28267527625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28267527625 is a deficient number, since it is larger than the sum of its proper divisors (7018738247).

28267527625 is an equidigital number, since it uses as much as digits as its factorization.

28267527625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53805 (or 53795 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 52.

The spelling of 28267527625 in words is "twenty-eight billion, two hundred sixty-seven million, five hundred twenty-seven thousand, six hundred twenty-five".