3125948837729 has 2 divisors, whose sum is σ = 3125948837730. Its totient is φ = 3125948837728.

The previous prime is 3125948837719. The next prime is 3125948837777. The reversal of 3125948837729 is 9277388495213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2283680104225 + 842268733504 = 1511185^2 + 917752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3125948837729 is a prime.

It is a super-2 number, since 2×3125948837729² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3125948837719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562974418864 + 1562974418865.

It is an arithmetic number, because the mean of its divisors is an integer number (1562974418865).

Almost surely, 2^{3125948837729} is an apocalyptic number.

It is an amenable number.

3125948837729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125948837729 is an equidigital number, since it uses as much as digits as its factorization.

3125948837729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 68.

The spelling of 3125948837729 in words is "three trillion, one hundred twenty-five billion, nine hundred forty-eight million, eight hundred thirty-seven thousand, seven hundred twenty-nine".