8325778249 has 4 divisors (see below), whose sum is σ = 8450043664. Its totient is φ = 8201512836.

The previous prime is 8325778247. The next prime is 8325778289. The reversal of 8325778249 is 9428775238.

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 8325778249 - 2¹ = 8325778247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8325778249.

It is not an unprimeable number, because it can be changed into a prime (8325778247) 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, 62132607 + ... + 62132740.

It is an arithmetic number, because the mean of its divisors is an integer number (2112510916).

Almost surely, 2^8325778249 is an apocalyptic number.

It is an amenable number.

8325778249 is a deficient number, since it is larger than the sum of its proper divisors (124265415).

8325778249 is a wasteful number, since it uses less digits than its factorization.

8325778249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124265414.

The product of its digits is 6773760, while the sum is 55.

The square root of 8325778249 is about 91245.7026330555. The cubic root of 8325778249 is about 2026.7877926215.

The spelling of 8325778249 in words is "eight billion, three hundred twenty-five million, seven hundred seventy-eight thousand, two hundred forty-nine".