12505500550469 has 2 divisors, whose sum is σ = 12505500550470. Its totient is φ = 12505500550468.

The previous prime is 12505500550441. The next prime is 12505500550597. The reversal of 12505500550469 is 96405500550521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7034626330369 + 5470874220100 = 2652287^2 + 2338990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12505500550469 is a prime.

It is a super-2 number, since 2×12505500550469² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12505500150469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252750275234 + 6252750275235.

It is an arithmetic number, because the mean of its divisors is an integer number (6252750275235).

Almost surely, 2^{12505500550469} is an apocalyptic number.

It is an amenable number.

12505500550469 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505500550469 is an equidigital number, since it uses as much as digits as its factorization.

12505500550469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350000, while the sum is 47.

The spelling of 12505500550469 in words is "twelve trillion, five hundred five billion, five hundred million, five hundred fifty thousand, four hundred sixty-nine".