6725566247 has 2 divisors, whose sum is σ = 6725566248. Its totient is φ = 6725566246.

The previous prime is 6725566217. The next prime is 6725566261. The reversal of 6725566247 is 7426655276.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6725566247 - 2¹⁴ = 6725549863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6725566195 and 6725566204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6725566207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362783123 + 3362783124.

It is an arithmetic number, because the mean of its divisors is an integer number (3362783124).

Almost surely, 2^6725566247 is an apocalyptic number.

6725566247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6725566247 is an equidigital number, since it uses as much as digits as its factorization.

6725566247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 50.

The square root of 6725566247 is about 82009.5497305039. The cubic root of 6725566247 is about 1887.5984771040.

The spelling of 6725566247 in words is "six billion, seven hundred twenty-five million, five hundred sixty-six thousand, two hundred forty-seven".