11725618 has 8 divisors (see below), whose sum is σ = 17610012. Its totient is φ = 5855616.

The previous prime is 11725613. The next prime is 11725639. The reversal of 11725618 is 81652711.

It can be written as a sum of positive squares in 2 ways, for example, as 11675889 + 49729 = 3417^2 + 223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11725618.

It is not an unprimeable number, because it can be changed into a prime (11725613) 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 3 ways as a sum of consecutive naturals, for example, 1255 + ... + 5002.

Almost surely, 2^11725618 is an apocalyptic number.

11725618 is a deficient number, since it is larger than the sum of its proper divisors (5884394).

11725618 is an equidigital number, since it uses as much as digits as its factorization.

11725618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196.

The product of its digits is 3360, while the sum is 31.

The square root of 11725618 is about 3424.2689730802. The cubic root of 11725618 is about 227.1844387155.

The spelling of 11725618 in words is "eleven million, seven hundred twenty-five thousand, six hundred eighteen".