28037011225 has 6 divisors (see below), whose sum is σ = 34765893950. Its totient is φ = 22429608960.

The previous prime is 28037011193. The next prime is 28037011273. The reversal of 28037011225 is 52211073082.

It can be written as a sum of positive squares in 3 ways, for example, as 2087667481 + 25949343744 = 45691^2 + 161088^2 .

It is not a de Polignac number, because 28037011225 - 2⁵ = 28037011193 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 560740200 + ... + 560740249.

Almost surely, 2^28037011225 is an apocalyptic number.

28037011225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28037011225 is a deficient number, since it is larger than the sum of its proper divisors (6728882725).

28037011225 is a wasteful number, since it uses less digits than its factorization.

28037011225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121480459 (or 1121480454 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The spelling of 28037011225 in words is "twenty-eight billion, thirty-seven million, eleven thousand, two hundred twenty-five".