12251525010721 has 2 divisors, whose sum is σ = 12251525010722. Its totient is φ = 12251525010720.

The previous prime is 12251525010671. The next prime is 12251525010743. The reversal of 12251525010721 is 12701052515221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250385003025 + 1140007696 = 3500055^2 + 33764^2 .

It is a cyclic number.

It is not a de Polignac number, because 12251525010721 - 2¹³ = 12251525002529 is a prime.

It is not a weakly prime, because it can be changed into another prime (12251525010121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125762505360 + 6125762505361.

It is an arithmetic number, because the mean of its divisors is an integer number (6125762505361).

Almost surely, 2^{12251525010721} is an apocalyptic number.

It is an amenable number.

12251525010721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251525010721 is an equidigital number, since it uses as much as digits as its factorization.

12251525010721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 34.

Adding to 12251525010721 its reverse (12701052515221), we get a palindrome (24952577525942).

The spelling of 12251525010721 in words is "twelve trillion, two hundred fifty-one billion, five hundred twenty-five million, ten thousand, seven hundred twenty-one".