1297107725 has 6 divisors (see below), whose sum is σ = 1608413610. Its totient is φ = 1037686160.

The previous prime is 1297107719. The next prime is 1297107767. The reversal of 1297107725 is 5277017921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 63904036 + 1233203689 = 7994^2 + 35117^2 .

It is not a de Polignac number, because 1297107725 - 2¹² = 1297103629 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25942130 + ... + 25942179.

It is an arithmetic number, because the mean of its divisors is an integer number (268068935).

Almost surely, 2^1297107725 is an apocalyptic number.

It is an amenable number.

1297107725 is a deficient number, since it is larger than the sum of its proper divisors (311305885).

1297107725 is an equidigital number, since it uses as much as digits as its factorization.

1297107725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51884319 (or 51884314 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 41.

The square root of 1297107725 is about 36015.3817833436. The cubic root of 1297107725 is about 1090.5828953130.

The spelling of 1297107725 in words is "one billion, two hundred ninety-seven million, one hundred seven thousand, seven hundred twenty-five".