2575172129 has 2 divisors, whose sum is σ = 2575172130. Its totient is φ = 2575172128.

The previous prime is 2575172123. The next prime is 2575172141. The reversal of 2575172129 is 9212715752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2513518225 + 61653904 = 50135^2 + 7852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2575172129 is a prime.

It is a super-2 number, since 2×2575172129² = 13263022987956785282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2575172123) by changing a digit.

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 as a sum of consecutive naturals, namely, 1287586064 + 1287586065.

It is an arithmetic number, because the mean of its divisors is an integer number (1287586065).

Almost surely, 2^2575172129 is an apocalyptic number.

It is an amenable number.

2575172129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2575172129 is an equidigital number, since it uses as much as digits as its factorization.

2575172129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 41.

The square root of 2575172129 is about 50746.1538345518. The cubic root of 2575172129 is about 1370.6779334289.

The spelling of 2575172129 in words is "two billion, five hundred seventy-five million, one hundred seventy-two thousand, one hundred twenty-nine".