29125859569 has 9 divisors (see below), whose sum is σ = 30943009227. Its totient is φ = 27409843104.

The previous prime is 29125859551. The next prime is 29125859573. The reversal of 29125859569 is 96595852192.

The square root of 29125859569 is 170663.

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

It can be written as a sum of positive squares in only one way, i.e., 22675842225 + 6450017344 = 150585^2 + 80312^2 .

It is not a de Polignac number, because 29125859569 - 2¹⁵ = 29125826801 is a prime.

It is a super-2 number, since 2×29125859569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29125859369) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2896252 + ... + 2906290.

Almost surely, 2^29125859569 is an apocalyptic number.

29125859569 is the 170663-rd square number.

29125859569 is the 85332-nd centered octagonal number.

It is an amenable number.

29125859569 is a deficient number, since it is larger than the sum of its proper divisors (1817149658).

29125859569 is an frugal number, since it uses more digits than its factorization.

29125859569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112 (or 10056 counting only the distinct ones).

The product of its digits is 17496000, while the sum is 61.

The spelling of 29125859569 in words is "twenty-nine billion, one hundred twenty-five million, eight hundred fifty-nine thousand, five hundred sixty-nine".