28027525553 has 4 divisors (see below), whose sum is σ = 28305025908. Its totient is φ = 27750025200.

The previous prime is 28027525531. The next prime is 28027525577. The reversal of 28027525553 is 35552572082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18820547344 + 9206978209 = 137188^2 + 95953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28027525553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28027525523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138750026 + ... + 138750227.

It is an arithmetic number, because the mean of its divisors is an integer number (7076256477).

Almost surely, 2^28027525553 is an apocalyptic number.

It is an amenable number.

28027525553 is a deficient number, since it is larger than the sum of its proper divisors (277500355).

28027525553 is a wasteful number, since it uses less digits than its factorization.

28027525553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277500354.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 28027525553 in words is "twenty-eight billion, twenty-seven million, five hundred twenty-five thousand, five hundred fifty-three".