11556360225 has 36 divisors (see below), whose sum is σ = 20761392912. Its totient is φ = 6144732000.

The previous prime is 11556360199. The next prime is 11556360229. The reversal of 11556360225 is 52206365511.

11556360225 is a `hidden beast` number, since 1 + 15 + 5 + 636 + 0 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 11556360225 - 2⁶ = 11556360161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11556360225.

It is not an unprimeable number, because it can be changed into a prime (11556360229) 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, 3111 + ... + 152060.

Almost surely, 2^11556360225 is an apocalyptic number.

11556360225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11556360225 is a deficient number, since it is larger than the sum of its proper divisors (9205032687).

11556360225 is a wasteful number, since it uses less digits than its factorization.

11556360225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155518 (or 155510 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 11556360225 in words is "eleven billion, five hundred fifty-six million, three hundred sixty thousand, two hundred twenty-five".