28724553925 has 12 divisors (see below), whose sum is σ = 35951332896. Its totient is φ = 22764878000.

The previous prime is 28724553919. The next prime is 28724553967. The reversal of 28724553925 is 52935542782.

It is not a de Polignac number, because 28724553925 - 2³ = 28724553917 is a prime.

It is a Duffinian number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 5366401 + ... + 5371750.

It is an arithmetic number, because the mean of its divisors is an integer number (2995944408).

Almost surely, 2^28724553925 is an apocalyptic number.

28724553925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28724553925 is a deficient number, since it is larger than the sum of its proper divisors (7226778971).

28724553925 is a wasteful number, since it uses less digits than its factorization.

28724553925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738268 (or 10738263 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 52.

The spelling of 28724553925 in words is "twenty-eight billion, seven hundred twenty-four million, five hundred fifty-three thousand, nine hundred twenty-five".