11565213625 has 64 divisors (see below), whose sum is σ = 17580146688. Its totient is φ = 7423627200.

The previous prime is 11565213619. The next prime is 11565213631. The reversal of 11565213625 is 52631256511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11565213619) and next prime (11565213631).

It is not a de Polignac number, because 11565213625 - 2¹¹ = 11565211577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 939762 + ... + 951988.

It is an arithmetic number, because the mean of its divisors is an integer number (274689792).

Almost surely, 2^11565213625 is an apocalyptic number.

It is an amenable number.

11565213625 is a deficient number, since it is larger than the sum of its proper divisors (6014933063).

11565213625 is a wasteful number, since it uses less digits than its factorization.

11565213625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12319 (or 12309 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The spelling of 11565213625 in words is "eleven billion, five hundred sixty-five million, two hundred thirteen thousand, six hundred twenty-five".