28057825550 has 24 divisors (see below), whose sum is σ = 52287389256. Its totient is φ = 11201660640.

The previous prime is 28057825513. The next prime is 28057825561. The reversal of 28057825550 is 5552875082.

It is a junction number, because it is equal to n+sod(n) for n = 28057825495 and 28057825504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510329 + ... + 562628.

It is an arithmetic number, because the mean of its divisors is an integer number (2178641219).

Almost surely, 2^28057825550 is an apocalyptic number.

28057825550 is a deficient number, since it is larger than the sum of its proper divisors (24229563706).

28057825550 is a wasteful number, since it uses less digits than its factorization.

28057825550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073492 (or 1073487 counting only the distinct ones).

The product of its (nonzero) digits is 1120000, while the sum is 47.

The spelling of 28057825550 in words is "twenty-eight billion, fifty-seven million, eight hundred twenty-five thousand, five hundred fifty".