11513225 has 12 divisors (see below), whose sum is σ = 14897856. Its totient is φ = 8809680.

The previous prime is 11513219. The next prime is 11513239. The reversal of 11513225 is 52231511.

It is a happy number.

It is not a de Polignac number, because 11513225 - 2⁴ = 11513209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11513197 and 11513206.

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, 9437 + ... + 10586.

It is an arithmetic number, because the mean of its divisors is an integer number (1241488).

Almost surely, 2^11513225 is an apocalyptic number.

It is an amenable number.

11513225 is a deficient number, since it is larger than the sum of its proper divisors (3384631).

11513225 is a wasteful number, since it uses less digits than its factorization.

11513225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20056 (or 20051 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 11513225 is about 3393.1143511529. The cubic root of 11513225 is about 225.8043638111.

Adding to 11513225 its reverse (52231511), we get a palindrome (63744736).

It can be divided in two parts, 115 and 13225, that multiplied together give a cube (1520875 = 115³).

The spelling of 11513225 in words is "eleven million, five hundred thirteen thousand, two hundred twenty-five".