12530125231081 has 2 divisors, whose sum is σ = 12530125231082. Its totient is φ = 12530125231080.

The previous prime is 12530125231073. The next prime is 12530125231087. The reversal of 12530125231081 is 18013252103521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10331666632681 + 2198458598400 = 3214291^2 + 1482720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12530125231081 - 2³ = 12530125231073 is a prime.

It is a super-2 number, since 2×12530125231081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12530125231087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265062615540 + 6265062615541.

It is an arithmetic number, because the mean of its divisors is an integer number (6265062615541).

Almost surely, 2^{12530125231081} is an apocalyptic number.

It is an amenable number.

12530125231081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12530125231081 is an equidigital number, since it uses as much as digits as its factorization.

12530125231081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 12530125231081 in words is "twelve trillion, five hundred thirty billion, one hundred twenty-five million, two hundred thirty-one thousand, eighty-one".