28143225089 has 4 divisors (see below), whose sum is σ = 32163685824. Its totient is φ = 24122764356.

The previous prime is 28143225037. The next prime is 28143225107. The reversal of 28143225089 is 98052234182.

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 28143225089 - 2¹² = 28143220993 is a prime.

It is a super-2 number, since 2×28143225089² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28143225029) 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, 2010230357 + ... + 2010230370.

It is an arithmetic number, because the mean of its divisors is an integer number (8040921456).

Almost surely, 2^28143225089 is an apocalyptic number.

It is an amenable number.

28143225089 is a deficient number, since it is larger than the sum of its proper divisors (4020460735).

28143225089 is an equidigital number, since it uses as much as digits as its factorization.

28143225089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020460734.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 28143225089 in words is "twenty-eight billion, one hundred forty-three million, two hundred twenty-five thousand, eighty-nine".