12405254500522 has 8 divisors (see below), whose sum is σ = 20039257270116. Its totient is φ = 5725502077152.

The previous prime is 12405254500519. The next prime is 12405254500523. The reversal of 12405254500522 is 22500545250421.

It can be written as a sum of positive squares in 2 ways, for example, as 11938206639241 + 467047861281 = 3455171^2 + 683409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12405254500523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238562586523 + ... + 238562586574.

Almost surely, 2^{12405254500522} is an apocalyptic number.

12405254500522 is a deficient number, since it is larger than the sum of its proper divisors (7634002769594).

12405254500522 is a wasteful number, since it uses less digits than its factorization.

12405254500522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477125173112.

The product of its (nonzero) digits is 160000, while the sum is 37.

Adding to 12405254500522 its reverse (22500545250421), we get a palindrome (34905799750943).

The spelling of 12405254500522 in words is "twelve trillion, four hundred five billion, two hundred fifty-four million, five hundred thousand, five hundred twenty-two".