28254559524481 has 4 divisors (see below), whose sum is σ = 28254585168832. Its totient is φ = 28254533880132.

The previous prime is 28254559524467. The next prime is 28254559524547. The reversal of 28254559524481 is 18442595545282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28254559524481 - 2⁵ = 28254559524449 is a prime.

It is a super-2 number, since 2×28254559524481² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28254559524431) 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, 11091645 + ... + 13399018.

It is an arithmetic number, because the mean of its divisors is an integer number (7063646292208).

Almost surely, 2^{28254559524481} is an apocalyptic number.

It is an amenable number.

28254559524481 is a deficient number, since it is larger than the sum of its proper divisors (25644351).

28254559524481 is a wasteful number, since it uses less digits than its factorization.

28254559524481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25644350.

The product of its digits is 184320000, while the sum is 64.

The spelling of 28254559524481 in words is "twenty-eight trillion, two hundred fifty-four billion, five hundred fifty-nine million, five hundred twenty-four thousand, four hundred eighty-one".