12555555125 has 16 divisors (see below), whose sum is σ = 15677468352. Its totient is φ = 10039229200.

The previous prime is 12555555107. The next prime is 12555555149. The reversal of 12555555125 is 52155555521.

It is not a de Polignac number, because 12555555125 - 2¹⁰ = 12555554101 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 225302 + ... + 275448.

It is an arithmetic number, because the mean of its divisors is an integer number (979841772).

Almost surely, 2^12555555125 is an apocalyptic number.

It is an amenable number.

12555555125 is a deficient number, since it is larger than the sum of its proper divisors (3121913227).

12555555125 is an equidigital number, since it uses as much as digits as its factorization.

12555555125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52165 (or 52155 counting only the distinct ones).

The product of its digits is 312500, while the sum is 41.

The spelling of 12555555125 in words is "twelve billion, five hundred fifty-five million, five hundred fifty-five thousand, one hundred twenty-five".