9722571331825 has 12 divisors (see below), whose sum is σ = 13151987401968. Its totient is φ = 7070960968400.

The previous prime is 9722571331819. The next prime is 9722571331853. The reversal of 9722571331825 is 5281331752279.

It is not a de Polignac number, because 9722571331825 - 2¹⁷ = 9722571200753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17677402147 + ... + 17677402696.

It is an arithmetic number, because the mean of its divisors is an integer number (1095998950164).

Almost surely, 2^{9722571331825} is an apocalyptic number.

It is an amenable number.

9722571331825 is a deficient number, since it is larger than the sum of its proper divisors (3429416070143).

9722571331825 is a wasteful number, since it uses less digits than its factorization.

9722571331825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35354804864 (or 35354804859 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 55.

The spelling of 9722571331825 in words is "nine trillion, seven hundred twenty-two billion, five hundred seventy-one million, three hundred thirty-one thousand, eight hundred twenty-five".