28225865733 has 12 divisors (see below), whose sum is σ = 40752138240. Its totient is φ = 17369763216.

The previous prime is 28225865687. The next prime is 28225865741. The reversal of 28225865733 is 33756852282.

It is a happy number.

It is not a de Polignac number, because 28225865733 - 2⁶ = 28225865669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28225865743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27835653 + ... + 27836666.

It is an arithmetic number, because the mean of its divisors is an integer number (3396011520).

Almost surely, 2^28225865733 is an apocalyptic number.

It is an amenable number.

28225865733 is a deficient number, since it is larger than the sum of its proper divisors (12526272507).

28225865733 is a wasteful number, since it uses less digits than its factorization.

28225865733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55672348 (or 55672335 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 51.

The spelling of 28225865733 in words is "twenty-eight billion, two hundred twenty-five million, eight hundred sixty-five thousand, seven hundred thirty-three".