11866011225 has 12 divisors (see below), whose sum is σ = 19618472016. Its totient is φ = 6328539280.

The previous prime is 11866011221. The next prime is 11866011251. The reversal of 11866011225 is 52211066811.

11866011225 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 11866011225 - 2² = 11866011221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11866011221) 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 11 ways as a sum of consecutive naturals, for example, 79106667 + ... + 79106816.

It is an arithmetic number, because the mean of its divisors is an integer number (1634872668).

Almost surely, 2^11866011225 is an apocalyptic number.

11866011225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11866011225 is a deficient number, since it is larger than the sum of its proper divisors (7752460791).

11866011225 is a wasteful number, since it uses less digits than its factorization.

11866011225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158213496 (or 158213491 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The spelling of 11866011225 in words is "eleven billion, eight hundred sixty-six million, eleven thousand, two hundred twenty-five".