11913225 has 12 divisors (see below), whose sum is σ = 19696656. Its totient is φ = 6353680.

The previous prime is 11913217. The next prime is 11913227. The reversal of 11913225 is 52231911.

It is not a de Polignac number, because 11913225 - 2³ = 11913217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11913195 and 11913204.

It is not an unprimeable number, because it can be changed into a prime (11913227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79347 + ... + 79496.

It is an arithmetic number, because the mean of its divisors is an integer number (1641388).

Almost surely, 2^11913225 is an apocalyptic number.

11913225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11913225 is a deficient number, since it is larger than the sum of its proper divisors (7783431).

11913225 is a wasteful number, since it uses less digits than its factorization.

11913225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158856 (or 158851 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 11913225 is about 3451.5539978392. The cubic root of 11913225 is about 228.3896653004.

The spelling of 11913225 in words is "eleven million, nine hundred thirteen thousand, two hundred twenty-five".