28068277625 has 16 divisors (see below), whose sum is σ = 35087589264. Its totient is φ = 22417200000.

The previous prime is 28068277609. The next prime is 28068277661. The reversal of 28068277625 is 52677286082.

It can be written as a sum of positive squares in 8 ways, for example, as 223681936 + 27844595689 = 14956^2 + 166867^2 .

It is not a de Polignac number, because 28068277625 - 2⁴ = 28068277609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 111686 + ... + 261935.

It is an arithmetic number, because the mean of its divisors is an integer number (2192974329).

Almost surely, 2^28068277625 is an apocalyptic number.

28068277625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28068277625 is a deficient number, since it is larger than the sum of its proper divisors (7019311639).

28068277625 is an equidigital number, since it uses as much as digits as its factorization.

28068277625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374237 (or 374227 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 28068277625 in words is "twenty-eight billion, sixty-eight million, two hundred seventy-seven thousand, six hundred twenty-five".