129825281713 has 2 divisors, whose sum is σ = 129825281714. Its totient is φ = 129825281712.

The previous prime is 129825281699. The next prime is 129825281749. The reversal of 129825281713 is 317182528921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125679467169 + 4145814544 = 354513^2 + 64388^2 .

It is an emirp because it is prime and its reverse (317182528921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129825281713 is a prime.

It is not a weakly prime, because it can be changed into another prime (129825281753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64912640856 + 64912640857.

It is an arithmetic number, because the mean of its divisors is an integer number (64912640857).

Almost surely, 2^129825281713 is an apocalyptic number.

It is an amenable number.

129825281713 is a deficient number, since it is larger than the sum of its proper divisors (1).

129825281713 is an equidigital number, since it uses as much as digits as its factorization.

129825281713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The spelling of 129825281713 in words is "one hundred twenty-nine billion, eight hundred twenty-five million, two hundred eighty-one thousand, seven hundred thirteen".