9115507525 has 12 divisors (see below), whose sum is σ = 11968125732. Its totient is φ = 6863440640.

The previous prime is 9115507523. The next prime is 9115507529. The reversal of 9115507525 is 5257055119.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 681105604 + 8434401921 = 26098^2 + 91839^2 .

It is not a de Polignac number, because 9115507525 - 2¹ = 9115507523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9115507523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10723702 + ... + 10724551.

It is an arithmetic number, because the mean of its divisors is an integer number (997343811).

Almost surely, 2^9115507525 is an apocalyptic number.

It is an amenable number.

9115507525 is a deficient number, since it is larger than the sum of its proper divisors (2852618207).

9115507525 is a wasteful number, since it uses less digits than its factorization.

9115507525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448280 (or 21448275 counting only the distinct ones).

The product of its (nonzero) digits is 78750, while the sum is 40.

The square root of 9115507525 is about 95475.1670592935. The cubic root of 9115507525 is about 2088.9447390594.

The spelling of 9115507525 in words is "nine billion, one hundred fifteen million, five hundred seven thousand, five hundred twenty-five".