11154534525 has 36 divisors (see below), whose sum is σ = 20001309120. Its totient is φ = 5942445600.

The previous prime is 11154534493. The next prime is 11154534529. The reversal of 11154534525 is 52543545111.

11154534525 is a `hidden beast` number, since 1 + 1 + 154 + 53 + 452 + 5 = 666.

It is not a de Polignac number, because 11154534525 - 2⁵ = 11154534493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11154534525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11154534529) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 177766 + ... + 232184.

It is an arithmetic number, because the mean of its divisors is an integer number (555591920).

Almost surely, 2^11154534525 is an apocalyptic number.

11154534525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11154534525 is a deficient number, since it is larger than the sum of its proper divisors (8846774595).

11154534525 is a wasteful number, since it uses less digits than its factorization.

11154534525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55346 (or 55338 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

It can be divided in two parts, 111545 and 34525, that added together give a triangular number (146070 = T₅₄₀).

The spelling of 11154534525 in words is "eleven billion, one hundred fifty-four million, five hundred thirty-four thousand, five hundred twenty-five".