11556552525 has 48 divisors (see below), whose sum is σ = 22112870400. Its totient is φ = 5216103360.

The previous prime is 11556552503. The next prime is 11556552569. The reversal of 11556552525 is 52525565511.

It is not a de Polignac number, because 11556552525 - 2⁵ = 11556552493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97845 + ... + 180794.

It is an arithmetic number, because the mean of its divisors is an integer number (460684800).

Almost surely, 2^11556552525 is an apocalyptic number.

11556552525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11556552525 is a deficient number, since it is larger than the sum of its proper divisors (10556317875).

11556552525 is a wasteful number, since it uses less digits than its factorization.

11556552525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278738 (or 278733 counting only the distinct ones).

The product of its digits is 375000, while the sum is 42.

The spelling of 11556552525 in words is "eleven billion, five hundred fifty-six million, five hundred fifty-two thousand, five hundred twenty-five".