11125565533 has 2 divisors, whose sum is σ = 11125565534. Its totient is φ = 11125565532.

The previous prime is 11125565531. The next prime is 11125565593. The reversal of 11125565533 is 33556552111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10970886564 + 154678969 = 104742^2 + 12437^2 .

It is a cyclic number.

It is not a de Polignac number, because 11125565533 - 2¹ = 11125565531 is a prime.

Together with 11125565531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11125565492 and 11125565501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11125565531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562782766 + 5562782767.

It is an arithmetic number, because the mean of its divisors is an integer number (5562782767).

Almost surely, 2^11125565533 is an apocalyptic number.

It is an amenable number.

11125565533 is a deficient number, since it is larger than the sum of its proper divisors (1).

11125565533 is an equidigital number, since it uses as much as digits as its factorization.

11125565533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67500, while the sum is 37.

The spelling of 11125565533 in words is "eleven billion, one hundred twenty-five million, five hundred sixty-five thousand, five hundred thirty-three".