28810424225 has 48 divisors (see below), whose sum is σ = 40027884480. Its totient is φ = 20392800000.

The previous prime is 28810424141. The next prime is 28810424231. The reversal of 28810424225 is 52242401882.

It is a de Polignac number, because none of the positive numbers 2^k-28810424225 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1629935 + ... + 1647515.

It is an arithmetic number, because the mean of its divisors is an integer number (833914260).

Almost surely, 2^28810424225 is an apocalyptic number.

28810424225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28810424225 is a deficient number, since it is larger than the sum of its proper divisors (11217460255).

28810424225 is a wasteful number, since it uses less digits than its factorization.

28810424225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17762 (or 17757 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 38.

The spelling of 28810424225 in words is "twenty-eight billion, eight hundred ten million, four hundred twenty-four thousand, two hundred twenty-five".