12555512625 has 16 divisors (see below), whose sum is σ = 20892373632. Its totient is φ = 6696273200.

The previous prime is 12555512621. The next prime is 12555512633. The reversal of 12555512625 is 52621555521.

It is not a de Polignac number, because 12555512625 - 2² = 12555512621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12555512621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16740309 + ... + 16741058.

It is an arithmetic number, because the mean of its divisors is an integer number (1305773352).

Almost surely, 2^12555512625 is an apocalyptic number.

12555512625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12555512625 is a deficient number, since it is larger than the sum of its proper divisors (8336861007).

12555512625 is an equidigital number, since it uses as much as digits as its factorization.

12555512625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33481385 (or 33481375 counting only the distinct ones).

The product of its digits is 150000, while the sum is 39.

The spelling of 12555512625 in words is "twelve billion, five hundred fifty-five million, five hundred twelve thousand, six hundred twenty-five".