9365625829561 has 9 divisors (see below), whose sum is σ = 9386688298831. Its totient is φ = 9344610536584.

The previous prime is 9365625829543. The next prime is 9365625829673. The reversal of 9365625829561 is 1659285265639.

The square root of 9365625829561 is 3060331.

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., 26367589161 + 9339258240400 = 162381^2 + 3056020^2 .

It is not a de Polignac number, because 9365625829561 - 2⁴³ = 569532807353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9365625829061) 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, 1465895355 + ... + 1465901743.

Almost surely, 2^{9365625829561} is an apocalyptic number.

9365625829561 is the 3060331-st square number.

9365625829561 is the 1530166-th centered octagonal number.

It is an amenable number.

9365625829561 is a deficient number, since it is larger than the sum of its proper divisors (21062469270).

9365625829561 is an frugal number, since it uses more digits than its factorization.

9365625829561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13736 (or 6868 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 67.

The spelling of 9365625829561 in words is "nine trillion, three hundred sixty-five billion, six hundred twenty-five million, eight hundred twenty-nine thousand, five hundred sixty-one".