12551245155 has 12 divisors (see below), whose sum is σ = 21755491680. Its totient is φ = 6693997392.

The previous prime is 12551245151. The next prime is 12551245177. The reversal of 12551245155 is 55154215521.

12551245155 is a `hidden beast` number, since 1 + 2 + 551 + 2 + 4 + 51 + 55 = 666.

It is not a de Polignac number, because 12551245155 - 2² = 12551245151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12551245151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139458235 + ... + 139458324.

It is an arithmetic number, because the mean of its divisors is an integer number (1812957640).

Almost surely, 2^12551245155 is an apocalyptic number.

12551245155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12551245155 is a deficient number, since it is larger than the sum of its proper divisors (9204246525).

12551245155 is a wasteful number, since it uses less digits than its factorization.

12551245155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278916570 (or 278916567 counting only the distinct ones).

The product of its digits is 50000, while the sum is 36.

The spelling of 12551245155 in words is "twelve billion, five hundred fifty-one million, two hundred forty-five thousand, one hundred fifty-five".