8243025718489 has 27 divisors (see below), whose sum is σ = 8825096127477. Its totient is φ = 7698616865016.

The previous prime is 8243025718463. The next prime is 8243025718517. The reversal of 8243025718489 is 9848175203428.

It is a happy number.

The square root of 8243025718489 is 2871067.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8243025718489 - 2²³ = 8243017329881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8243025710489) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2839483812 + ... + 2839486714.

Almost surely, 2^{8243025718489} is an apocalyptic number.

8243025718489 is the 2871067-th square number.

8243025718489 is the 1435534-th centered octagonal number.

It is an amenable number.

8243025718489 is a deficient number, since it is larger than the sum of its proper divisors (582070408988).

8243025718489 is an frugal number, since it uses more digits than its factorization.

8243025718489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5938 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 61.

The spelling of 8243025718489 in words is "eight trillion, two hundred forty-three billion, twenty-five million, seven hundred eighteen thousand, four hundred eighty-nine".