8125574689 has 4 divisors (see below), whose sum is σ = 8126308656. Its totient is φ = 8124840724.

The previous prime is 8125574687. The next prime is 8125574719. The reversal of 8125574689 is 9864755218.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8125574689 - 2¹ = 8125574687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8125574687) 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, 350119 + ... + 372604.

It is an arithmetic number, because the mean of its divisors is an integer number (2031577164).

Almost surely, 2^8125574689 is an apocalyptic number.

It is an amenable number.

8125574689 is a deficient number, since it is larger than the sum of its proper divisors (733967).

8125574689 is a wasteful number, since it uses less digits than its factorization.

8125574689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733966.

The product of its digits is 4838400, while the sum is 55.

The square root of 8125574689 is about 90141.9696312434. The cubic root of 8125574689 is about 2010.4102764717.

The spelling of 8125574689 in words is "eight billion, one hundred twenty-five million, five hundred seventy-four thousand, six hundred eighty-nine".