12625476121 has 2 divisors, whose sum is σ = 12625476122. Its totient is φ = 12625476120.

The previous prime is 12625476119. The next prime is 12625476131. The reversal of 12625476121 is 12167452621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12254490000 + 370986121 = 110700^2 + 19261^2 .

It is an emirp because it is prime and its reverse (12167452621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12625476121 - 2¹ = 12625476119 is a prime.

Together with 12625476119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12625476131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312738060 + 6312738061.

It is an arithmetic number, because the mean of its divisors is an integer number (6312738061).

Almost surely, 2^12625476121 is an apocalyptic number.

It is an amenable number.

12625476121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12625476121 is an equidigital number, since it uses as much as digits as its factorization.

12625476121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The spelling of 12625476121 in words is "twelve billion, six hundred twenty-five million, four hundred seventy-six thousand, one hundred twenty-one".