12555201515 has 16 divisors (see below), whose sum is σ = 15244416000. Its totient is φ = 9925863552.

The previous prime is 12555201511. The next prime is 12555201517. The reversal of 12555201515 is 51510255521.

It is a cyclic number.

It is not a de Polignac number, because 12555201515 - 2² = 12555201511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12555201511) 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, 178661 + ... + 238809.

It is an arithmetic number, because the mean of its divisors is an integer number (952776000).

Almost surely, 2^12555201515 is an apocalyptic number.

12555201515 is a deficient number, since it is larger than the sum of its proper divisors (2689214485).

12555201515 is a wasteful number, since it uses less digits than its factorization.

12555201515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60646.

The product of its (nonzero) digits is 12500, while the sum is 32.

The spelling of 12555201515 in words is "twelve billion, five hundred fifty-five million, two hundred one thousand, five hundred fifteen".