12505142504305 has 16 divisors (see below), whose sum is σ = 16370595360000. Its totient is φ = 9094522988160.

The previous prime is 12505142504251. The next prime is 12505142504339. The reversal of 12505142504305 is 50340524150521.

It is not a de Polignac number, because 12505142504305 - 2¹⁷ = 12505142373233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2522296 + ... + 5601094.

It is an arithmetic number, because the mean of its divisors is an integer number (1023162210000).

Almost surely, 2^{12505142504305} is an apocalyptic number.

It is an amenable number.

12505142504305 is a deficient number, since it is larger than the sum of its proper divisors (3865452855695).

12505142504305 is a wasteful number, since it uses less digits than its factorization.

12505142504305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152664.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 12505142504305 its reverse (50340524150521), we get a palindrome (62845666654826).

The spelling of 12505142504305 in words is "twelve trillion, five hundred five billion, one hundred forty-two million, five hundred four thousand, three hundred five".