12255513533 has 4 divisors (see below), whose sum is σ = 12291880380. Its totient is φ = 12219146688.

The previous prime is 12255513527. The next prime is 12255513539. The reversal of 12255513533 is 33531555221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33531555221 = 7573 ⋅4427777.

It is an interprime number because it is at equal distance from previous prime (12255513527) and next prime (12255513539).

It can be written as a sum of positive squares in 2 ways, for example, as 4841098084 + 7414415449 = 69578^2 + 86107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12255513533 is a prime.

It is a super-2 number, since 2×12255513533² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12255513493 and 12255513502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12255513539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18182918 + ... + 18183591.

It is an arithmetic number, because the mean of its divisors is an integer number (3072970095).

Almost surely, 2^12255513533 is an apocalyptic number.

It is an amenable number.

12255513533 is a deficient number, since it is larger than the sum of its proper divisors (36366847).

12255513533 is an equidigital number, since it uses as much as digits as its factorization.

12255513533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36366846.

The product of its digits is 67500, while the sum is 35.

The spelling of 12255513533 in words is "twelve billion, two hundred fifty-five million, five hundred thirteen thousand, five hundred thirty-three".