12505515112511 has 8 divisors (see below), whose sum is σ = 12514441238544. Its totient is φ = 12496591681920.

The previous prime is 12505515112481. The next prime is 12505515112589. The reversal of 12505515112511 is 11521151550521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12505515112511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12505515102511) 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, 8654471 + ... + 9995543.

It is an arithmetic number, because the mean of its divisors is an integer number (1564305154818).

Almost surely, 2^{12505515112511} is an apocalyptic number.

12505515112511 is a deficient number, since it is larger than the sum of its proper divisors (8926126033).

12505515112511 is a wasteful number, since it uses less digits than its factorization.

12505515112511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347721.

The product of its (nonzero) digits is 12500, while the sum is 35.

The spelling of 12505515112511 in words is "twelve trillion, five hundred five billion, five hundred fifteen million, one hundred twelve thousand, five hundred eleven".