28125283571 has 24 divisors (see below), whose sum is σ = 35781629616. Its totient is φ = 21860435520.

The previous prime is 28125283547. The next prime is 28125283573. The reversal of 28125283571 is 17538252182.

It is not a de Polignac number, because 28125283571 - 2⁶ = 28125283507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28125283573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148265 + ... + 279701.

It is an arithmetic number, because the mean of its divisors is an integer number (1490901234).

Almost surely, 2^28125283571 is an apocalyptic number.

28125283571 is a deficient number, since it is larger than the sum of its proper divisors (7656346045).

28125283571 is a wasteful number, since it uses less digits than its factorization.

28125283571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131859 (or 131852 counting only the distinct ones).

The product of its digits is 268800, while the sum is 44.

The spelling of 28125283571 in words is "twenty-eight billion, one hundred twenty-five million, two hundred eighty-three thousand, five hundred seventy-one".