28340025585 has 16 divisors (see below), whose sum is σ = 45354696576. Its totient is φ = 15111128448.

The previous prime is 28340025557. The next prime is 28340025601. The reversal of 28340025585 is 58552004382.

It is a happy number.

It is not a de Polignac number, because 28340025585 - 2¹⁰ = 28340024561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155389 + ... + 284298.

It is an arithmetic number, because the mean of its divisors is an integer number (2834668536).

Almost surely, 2^28340025585 is an apocalyptic number.

It is an amenable number.

28340025585 is a deficient number, since it is larger than the sum of its proper divisors (17014670991).

28340025585 is a wasteful number, since it uses less digits than its factorization.

28340025585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443992.

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 28340025585 in words is "twenty-eight billion, three hundred forty million, twenty-five thousand, five hundred eighty-five".