11725587 has 12 divisors (see below), whose sum is σ = 17397640. Its totient is φ = 7805196.

The previous prime is 11725573. The next prime is 11725613. The reversal of 11725587 is 78552711.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

11725587 is a `hidden beast` number, since 1 + 1 + 72 + 5 + 587 = 666.

It is not a de Polignac number, because 11725587 - 2¹⁰ = 11724563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11725507) 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 11 ways as a sum of consecutive naturals, for example, 17464 + ... + 18122.

Almost surely, 2^11725587 is an apocalyptic number.

11725587 is a deficient number, since it is larger than the sum of its proper divisors (5672053).

11725587 is an frugal number, since it uses more digits than its factorization.

11725587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327 (or 662 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 11725587 is about 3424.2644465637. The cubic root of 11725587 is about 227.1842385065.

The spelling of 11725587 in words is "eleven million, seven hundred twenty-five thousand, five hundred eighty-seven".