8259985519 has 4 divisors (see below), whose sum is σ = 8260242496. Its totient is φ = 8259728544.

The previous prime is 8259985493. The next prime is 8259985537. The reversal of 8259985519 is 9155899528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8259985519 - 2¹¹ = 8259983471 is a prime.

It is a super-2 number, since 2×8259985519² (a number of 21 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 (8259985549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71994 + ... + 147319.

It is an arithmetic number, because the mean of its divisors is an integer number (2065060624).

Almost surely, 2^8259985519 is an apocalyptic number.

8259985519 is a deficient number, since it is larger than the sum of its proper divisors (256977).

8259985519 is a wasteful number, since it uses less digits than its factorization.

8259985519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256976.

The product of its digits is 11664000, while the sum is 61.

The square root of 8259985519 is about 90884.4624729662. The cubic root of 8259985519 is about 2021.4349115022.

The spelling of 8259985519 in words is "eight billion, two hundred fifty-nine million, nine hundred eighty-five thousand, five hundred nineteen".