9131525441 has 4 divisors (see below), whose sum is σ = 9133132884. Its totient is φ = 9129918000.

The previous prime is 9131525411. The next prime is 9131525471. The reversal of 9131525441 is 1445251319.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1445251319 = 101 ⋅14309419.

It is an interprime number because it is at equal distance from previous prime (9131525411) and next prime (9131525471).

It can be written as a sum of positive squares in 2 ways, for example, as 7051800625 + 2079724816 = 83975^2 + 45604^2 .

It is a cyclic number.

It is not a de Polignac number, because 9131525441 - 2¹⁰ = 9131524417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9131525411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795170 + ... + 806571.

It is an arithmetic number, because the mean of its divisors is an integer number (2283283221).

Almost surely, 2^9131525441 is an apocalyptic number.

It is an amenable number.

9131525441 is a deficient number, since it is larger than the sum of its proper divisors (1607443).

9131525441 is a wasteful number, since it uses less digits than its factorization.

9131525441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607442.

The product of its digits is 21600, while the sum is 35.

The square root of 9131525441 is about 95559.0154878126. The cubic root of 9131525441 is about 2090.1675987939.

The spelling of 9131525441 in words is "nine billion, one hundred thirty-one million, five hundred twenty-five thousand, four hundred forty-one".