1298925697 has 2 divisors, whose sum is σ = 1298925698. Its totient is φ = 1298925696.

The previous prime is 1298925679. The next prime is 1298925701. The reversal of 1298925697 is 7965298921.

Together with previous prime (1298925679) 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., 928786576 + 370139121 = 30476^2 + 19239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1298925697 - 2¹¹ = 1298923649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298925497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649462848 + 649462849.

It is an arithmetic number, because the mean of its divisors is an integer number (649462849).

Almost surely, 2^1298925697 is an apocalyptic number.

It is an amenable number.

1298925697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298925697 is an equidigital number, since it uses as much as digits as its factorization.

1298925697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 1298925697 is about 36040.6117733870. The cubic root of 1298925697 is about 1091.0921626066.

The spelling of 1298925697 in words is "one billion, two hundred ninety-eight million, nine hundred twenty-five thousand, six hundred ninety-seven".