11543565225 has 48 divisors (see below), whose sum is σ = 19325638080. Its totient is φ = 6079392000.

The previous prime is 11543565223. The next prime is 11543565239. The reversal of 11543565225 is 52256534511.

It is not a de Polignac number, because 11543565225 - 2¹ = 11543565223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11543565221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3172107 + ... + 3175743.

It is an arithmetic number, because the mean of its divisors is an integer number (402617460).

Almost surely, 2^11543565225 is an apocalyptic number.

11543565225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11543565225 is a deficient number, since it is larger than the sum of its proper divisors (7782072855).

11543565225 is a wasteful number, since it uses less digits than its factorization.

11543565225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170 (or 4165 counting only the distinct ones).

The product of its digits is 180000, while the sum is 39.

The spelling of 11543565225 in words is "eleven billion, five hundred forty-three million, five hundred sixty-five thousand, two hundred twenty-five".