8125568449 has 2 divisors, whose sum is σ = 8125568450. Its totient is φ = 8125568448.

The previous prime is 8125568411. The next prime is 8125568467. The reversal of 8125568449 is 9448655218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7950932224 + 174636225 = 89168^2 + 13215^2 .

It is a cyclic number.

It is not a de Polignac number, because 8125568449 - 2²⁷ = 7991350721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8125568396 and 8125568405.

It is not a weakly prime, because it can be changed into another prime (8125568749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062784224 + 4062784225.

It is an arithmetic number, because the mean of its divisors is an integer number (4062784225).

Almost surely, 2^8125568449 is an apocalyptic number.

It is an amenable number.

8125568449 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125568449 is an equidigital number, since it uses as much as digits as its factorization.

8125568449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2764800, while the sum is 52.

The square root of 8125568449 is about 90141.9350191685. The cubic root of 8125568449 is about 2010.4097618430.

The spelling of 8125568449 in words is "eight billion, one hundred twenty-five million, five hundred sixty-eight thousand, four hundred forty-nine".