28064604625 has 8 divisors (see below), whose sum is σ = 35024626728. Its totient is φ = 22451683600.

The previous prime is 28064604619. The next prime is 28064604677. The reversal of 28064604625 is 52640646082.

It can be written as a sum of positive squares in 4 ways, for example, as 58247424 + 28006357201 = 7632^2 + 167351^2 .

It is not a de Polignac number, because 28064604625 - 2¹³ = 28064596433 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 112258294 + ... + 112258543.

It is an arithmetic number, because the mean of its divisors is an integer number (4378078341).

Almost surely, 2^28064604625 is an apocalyptic number.

28064604625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28064604625 is a deficient number, since it is larger than the sum of its proper divisors (6960022103).

28064604625 is an equidigital number, since it uses as much as digits as its factorization.

28064604625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224516852 (or 224516842 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 28064604625 in words is "twenty-eight billion, sixty-four million, six hundred four thousand, six hundred twenty-five".