28866872325 has 24 divisors (see below), whose sum is σ = 47764094688. Its totient is φ = 15383558080.

The previous prime is 28866872303. The next prime is 28866872327. The reversal of 28866872325 is 52327866882.

It is not a de Polignac number, because 28866872325 - 2¹⁶ = 28866806789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866872327) 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, 54927 + ... + 246476.

It is an arithmetic number, because the mean of its divisors is an integer number (1990170612).

Almost surely, 2^28866872325 is an apocalyptic number.

28866872325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28866872325 is a deficient number, since it is larger than the sum of its proper divisors (18897222363).

28866872325 is a wasteful number, since it uses less digits than its factorization.

28866872325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302693 (or 302688 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The spelling of 28866872325 in words is "twenty-eight billion, eight hundred sixty-six million, eight hundred seventy-two thousand, three hundred twenty-five".