11405532525 has 24 divisors (see below), whose sum is σ = 19507397280. Its totient is φ = 5873192640.

The previous prime is 11405532521. The next prime is 11405532533. The reversal of 11405532525 is 52523550411.

It is not a de Polignac number, because 11405532525 - 2² = 11405532521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405532521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2619787 + ... + 2624136.

It is an arithmetic number, because the mean of its divisors is an integer number (812808220).

Almost surely, 2^11405532525 is an apocalyptic number.

11405532525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11405532525 is a deficient number, since it is larger than the sum of its proper divisors (8101864755).

11405532525 is a wasteful number, since it uses less digits than its factorization.

11405532525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243965 (or 5243960 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 11405532525 in words is "eleven billion, four hundred five million, five hundred thirty-two thousand, five hundred twenty-five".