12500001376397 has 2 divisors, whose sum is σ = 12500001376398. Its totient is φ = 12500001376396.

The previous prime is 12500001376367. The next prime is 12500001376403. The reversal of 12500001376397 is 79367310000521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11222674200676 + 1277327175721 = 3350026^2 + 1130189^2 .

It is a cyclic number.

It is not a de Polignac number, because 12500001376397 - 2²⁶ = 12499934267533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12500001376367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250000688198 + 6250000688199.

It is an arithmetic number, because the mean of its divisors is an integer number (6250000688199).

Almost surely, 2^{12500001376397} is an apocalyptic number.

It is an amenable number.

12500001376397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12500001376397 is an equidigital number, since it uses as much as digits as its factorization.

12500001376397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 12500001376397 in words is "twelve trillion, five hundred billion, one million, three hundred seventy-six thousand, three hundred ninety-seven".