12505241403543 has 8 divisors (see below), whose sum is σ = 19055605948288. Its totient is φ = 7145852230584.

The previous prime is 12505241403539. The next prime is 12505241403559. The reversal of 12505241403543 is 34530414250521.

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

It is not a de Polignac number, because 12505241403543 - 2² = 12505241403539 is a prime.

It is a super-2 number, since 2×12505241403543² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505241403943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297743842921 + ... + 297743842962.

It is an arithmetic number, because the mean of its divisors is an integer number (2381950743536).

Almost surely, 2^{12505241403543} is an apocalyptic number.

12505241403543 is a deficient number, since it is larger than the sum of its proper divisors (6550364544745).

12505241403543 is an equidigital number, since it uses as much as digits as its factorization.

12505241403543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595487685893.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 12505241403543 in words is "twelve trillion, five hundred five billion, two hundred forty-one million, four hundred three thousand, five hundred forty-three".