129086068176025 has 9 divisors (see below), whose sum is σ = 160066794980253. Its totient is φ = 103268809094400.

The previous prime is 129086068176011. The next prime is 129086068176071. The reversal of 129086068176025 is 520671860680921.

The square root of 129086068176025 is 11361605.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 75658213537929 + 53427854638096 = 8698173^2 + 7309436^2 .

It is not a de Polignac number, because 129086068176025 - 2⁹ = 129086068175513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55671865 + ... + 57944185.

Almost surely, 2^{129086068176025} is an apocalyptic number.

129086068176025 is the 11361605-th square number.

129086068176025 is the 5680803-rd centered octagonal number.

It is an amenable number.

129086068176025 is a deficient number, since it is larger than the sum of its proper divisors (30980726804228).

129086068176025 is an frugal number, since it uses more digits than its factorization.

129086068176025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544652 (or 2272326 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 129086068176025 in words is "one hundred twenty-nine trillion, eighty-six billion, sixty-eight million, one hundred seventy-six thousand, twenty-five".