11165587725 has 24 divisors (see below), whose sum is σ = 18541080160. Its totient is φ = 5928966720.

The previous prime is 11165587711. The next prime is 11165587739. The reversal of 11165587725 is 52778556111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11165587711) and next prime (11165587739).

It is not a de Polignac number, because 11165587725 - 2⁷ = 11165587597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307879 + ... + 342228.

Almost surely, 2^11165587725 is an apocalyptic number.

11165587725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11165587725 is a deficient number, since it is larger than the sum of its proper divisors (7375492435).

11165587725 is a wasteful number, since it uses less digits than its factorization.

11165587725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650349 (or 650344 counting only the distinct ones).

The product of its digits is 588000, while the sum is 48.

The spelling of 11165587725 in words is "eleven billion, one hundred sixty-five million, five hundred eighty-seven thousand, seven hundred twenty-five".