28002800025550 has 48 divisors (see below), whose sum is σ = 60341376110112. Its totient is φ = 9469440000000.

The previous prime is 28002800025533. The next prime is 28002800025647. The reversal of 28002800025550 is 5552000820082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547974451 + ... + 548025550.

It is an arithmetic number, because the mean of its divisors is an integer number (1257112002294).

Almost surely, 2^{28002800025550} is an apocalyptic number.

28002800025550 is an abundant number, since it is smaller than the sum of its proper divisors (32338576084562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28002800025550 is a wasteful number, since it uses less digits than its factorization.

28002800025550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096000093 (or 1096000088 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The spelling of 28002800025550 in words is "twenty-eight trillion, two billion, eight hundred million, twenty-five thousand, five hundred fifty".