11525112513 has 24 divisors (see below), whose sum is σ = 17642829600. Its totient is φ = 7435539720.

The previous prime is 11525112503. The next prime is 11525112541. The reversal of 11525112513 is 31521152511.

It is a happy number.

11525112513 is a `hidden beast` number, since 1 + 1 + 525 + 1 + 125 + 13 = 666.

11525112513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11525112513 - 2⁴ = 11525112497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11525112503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196143 + ... + 248036.

It is an arithmetic number, because the mean of its divisors is an integer number (735117900).

Almost surely, 2^11525112513 is an apocalyptic number.

It is an amenable number.

11525112513 is a deficient number, since it is larger than the sum of its proper divisors (6117717087).

11525112513 is an equidigital number, since it uses as much as digits as its factorization.

11525112513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444250 (or 444213 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The spelling of 11525112513 in words is "eleven billion, five hundred twenty-five million, one hundred twelve thousand, five hundred thirteen".