24125022721 has 2 divisors, whose sum is σ = 24125022722. Its totient is φ = 24125022720.

The previous prime is 24125022707. The next prime is 24125022739. The reversal of 24125022721 is 12722052142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23925902400 + 199120321 = 154680^2 + 14111^2 .

It is a cyclic number.

It is not a de Polignac number, because 24125022721 - 2⁵ = 24125022689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24125022721.

It is not a weakly prime, because it can be changed into another prime (24125025721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12062511360 + 12062511361.

It is an arithmetic number, because the mean of its divisors is an integer number (12062511361).

Almost surely, 2^24125022721 is an apocalyptic number.

It is an amenable number.

24125022721 is a deficient number, since it is larger than the sum of its proper divisors (1).

24125022721 is an equidigital number, since it uses as much as digits as its factorization.

24125022721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 24125022721 its reverse (12722052142), we get a palindrome (36847074863).

The spelling of 24125022721 in words is "twenty-four billion, one hundred twenty-five million, twenty-two thousand, seven hundred twenty-one".