11555225 has 12 divisors (see below), whose sum is σ = 15631440.
Its totient is φ = 8403600.
The previous prime is 11555213. The next prime is 11555263. The reversal of 11555225 is 52255511.
It is not a de Polignac number, because 11555225 - 26 = 11555161 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 11555194 and 11555203.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20735 + ... + 21284.
It is an arithmetic number, because the mean of its divisors is an integer number (1302620).
Almost surely, 211555225 is an apocalyptic number.
It is an amenable number.
11555225 is a deficient number, since it is larger than the sum of its proper divisors (4076215).
11555225 is a wasteful number, since it uses less digits than its factorization.
11555225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 42040 (or 42035 counting only the distinct ones).
The product of its digits is 2500, while the sum is 26.
The square root of 11555225 is about 3399.2977215890.
The cubic root of 11555225 is about 226.0786071090.
The spelling of 11555225 in words is "eleven million, five hundred fifty-five thousand, two hundred twenty-five".