11565225523 has 2 divisors, whose sum is σ = 11565225524. Its totient is φ = 11565225522.

The previous prime is 11565225509. The next prime is 11565225533. The reversal of 11565225523 is 32552256511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11565225523 - 2¹⁷ = 11565094451 is a prime.

It is not a weakly prime, because it can be changed into another prime (11565225533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782612761 + 5782612762.

It is an arithmetic number, because the mean of its divisors is an integer number (5782612762).

Almost surely, 2^11565225523 is an apocalyptic number.

11565225523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11565225523 is an equidigital number, since it uses as much as digits as its factorization.

11565225523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 37.

The spelling of 11565225523 in words is "eleven billion, five hundred sixty-five million, two hundred twenty-five thousand, five hundred twenty-three".