11439225 has 72 divisors (see below), whose sum is σ = 24373440. Its totient is φ = 5209920.

The previous prime is 11439221. The next prime is 11439227. The reversal of 11439225 is 52293411.

11439225 is a `hidden beast` number, since 1 + 1 + 439 + 225 = 666.

It is not a de Polignac number, because 11439225 - 2² = 11439221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11439221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 42391 + ... + 42659.

It is an arithmetic number, because the mean of its divisors is an integer number (338520).

Almost surely, 2^11439225 is an apocalyptic number.

11439225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11439225 is an abundant number, since it is smaller than the sum of its proper divisors (12934215).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11439225 is an equidigital number, since it uses as much as digits as its factorization.

11439225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 284 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 11439225 is about 3382.1923363404. The cubic root of 11439225 is about 225.3195459646.

It can be divided in two parts, 11439 and 225, that added together give a square (11664 = 108²).

The spelling of 11439225 in words is "eleven million, four hundred thirty-nine thousand, two hundred twenty-five".