12505505111 has 8 divisors (see below), whose sum is σ = 13655743248. Its totient is φ = 11357496000.

The previous prime is 12505505069. The next prime is 12505505123. The reversal of 12505505111 is 11150550521.

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

It is a cyclic number.

It is not a de Polignac number, because 12505505111 - 2¹⁴ = 12505488727 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 (12505508111) 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, 545510 + ... + 567971.

It is an arithmetic number, because the mean of its divisors is an integer number (1706967906).

Almost surely, 2^12505505111 is an apocalyptic number.

12505505111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12505505111 is a deficient number, since it is larger than the sum of its proper divisors (1150238137).

12505505111 is a wasteful number, since it uses less digits than its factorization.

12505505111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114513.

The product of its (nonzero) digits is 1250, while the sum is 26.

The spelling of 12505505111 in words is "twelve billion, five hundred five million, five hundred five thousand, one hundred eleven".