28425587591 has 8 divisors (see below), whose sum is σ = 28510986240. Its totient is φ = 28340283672.

The previous prime is 28425587587. The next prime is 28425587623. The reversal of 28425587591 is 19578552482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28425587591 - 2² = 28425587587 is a prime.

It is a super-2 number, since 2×28425587591² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28425587191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601946 + ... + 647448.

It is an arithmetic number, because the mean of its divisors is an integer number (3563873280).

Almost surely, 2^28425587591 is an apocalyptic number.

28425587591 is a deficient number, since it is larger than the sum of its proper divisors (85398649).

28425587591 is a wasteful number, since it uses less digits than its factorization.

28425587591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47365.

The product of its digits is 8064000, while the sum is 56.

The spelling of 28425587591 in words is "twenty-eight billion, four hundred twenty-five million, five hundred eighty-seven thousand, five hundred ninety-one".