9125891186281 has 9 divisors (see below), whose sum is σ = 9141339003069. Its totient is φ = 9110469445836.

The previous prime is 9125891186267. The next prime is 9125891186311. The reversal of 9125891186281 is 1826811985219.

The square root of 9125891186281 is 3020909.

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

It is not a de Polignac number, because 9125891186281 - 2⁹ = 9125891185769 is a prime.

It is a super-2 number, since 2×9125891186281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9125891186231) 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, 2063278636 + ... + 2063283058.

Almost surely, 2^{9125891186281} is an apocalyptic number.

9125891186281 is the 3020909-th square number.

9125891186281 is the 1510455-th centered octagonal number.

It is an amenable number.

9125891186281 is a deficient number, since it is larger than the sum of its proper divisors (15447816788).

9125891186281 is an frugal number, since it uses more digits than its factorization.

9125891186281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212 (or 5106 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 61.

The spelling of 9125891186281 in words is "nine trillion, one hundred twenty-five billion, eight hundred ninety-one million, one hundred eighty-six thousand, two hundred eighty-one".