11811425 has 6 divisors (see below), whose sum is σ = 14646198. Its totient is φ = 9449120.

The previous prime is 11811419. The next prime is 11811427. The reversal of 11811425 is 52411811.

It can be written as a sum of positive squares in 3 ways, for example, as 5329 + 11806096 = 73^2 + 3436^2 .

It is not a de Polignac number, because 11811425 - 2⁶ = 11811361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11811425.

It is not an unprimeable number, because it can be changed into a prime (11811427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236204 + ... + 236253.

It is an arithmetic number, because the mean of its divisors is an integer number (2441033).

Almost surely, 2^11811425 is an apocalyptic number.

It is an amenable number.

11811425 is a deficient number, since it is larger than the sum of its proper divisors (2834773).

11811425 is an equidigital number, since it uses as much as digits as its factorization.

11811425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472467 (or 472462 counting only the distinct ones).

The product of its digits is 320, while the sum is 23.

The square root of 11811425 is about 3436.7753781706. The cubic root of 11811425 is about 227.7372640395.

The spelling of 11811425 in words is "eleven million, eight hundred eleven thousand, four hundred twenty-five".