12625219897 has 2 divisors, whose sum is σ = 12625219898. Its totient is φ = 12625219896.

The previous prime is 12625219879. The next prime is 12625219909. The reversal of 12625219897 is 79891252621.

Together with previous prime (12625219879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12007995561 + 617224336 = 109581^2 + 24844^2 .

It is an emirp because it is prime and its reverse (79891252621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12625219897 - 2¹¹ = 12625217849 is a prime.

It is not a weakly prime, because it can be changed into another prime (12625219297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6312609948 + 6312609949.

It is an arithmetic number, because the mean of its divisors is an integer number (6312609949).

Almost surely, 2^12625219897 is an apocalyptic number.

It is an amenable number.

12625219897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12625219897 is an equidigital number, since it uses as much as digits as its factorization.

12625219897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 52.

The spelling of 12625219897 in words is "twelve billion, six hundred twenty-five million, two hundred nineteen thousand, eight hundred ninety-seven".