11265312565 has 32 divisors (see below), whose sum is σ = 15558842880. Its totient is φ = 7756391424.

The previous prime is 11265312533. The next prime is 11265312581. The reversal of 11265312565 is 56521356211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11265312565 - 2⁵ = 11265312533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70596 + ... + 165874.

It is an arithmetic number, because the mean of its divisors is an integer number (486213840).

Almost surely, 2^11265312565 is an apocalyptic number.

It is an amenable number.

11265312565 is a deficient number, since it is larger than the sum of its proper divisors (4293530315).

11265312565 is a wasteful number, since it uses less digits than its factorization.

11265312565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95421.

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

Adding to 11265312565 its reverse (56521356211), we get a palindrome (67786668776).

The spelling of 11265312565 in words is "eleven billion, two hundred sixty-five million, three hundred twelve thousand, five hundred sixty-five".