9725215847 has 2 divisors, whose sum is σ = 9725215848. Its totient is φ = 9725215846.

The previous prime is 9725215831. The next prime is 9725215861. The reversal of 9725215847 is 7485125279.

9725215847 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9725215847 - 2⁴ = 9725215831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9725215795 and 9725215804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9725215807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4862607923 + 4862607924.

It is an arithmetic number, because the mean of its divisors is an integer number (4862607924).

Almost surely, 2^9725215847 is an apocalyptic number.

9725215847 is a deficient number, since it is larger than the sum of its proper divisors (1).

9725215847 is an equidigital number, since it uses as much as digits as its factorization.

9725215847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 50.

The square root of 9725215847 is about 98616.5089982402. The cubic root of 9725215847 is about 2134.5176471761.

The spelling of 9725215847 in words is "nine billion, seven hundred twenty-five million, two hundred fifteen thousand, eight hundred forty-seven".