12125505654 has 64 divisors (see below), whose sum is σ = 28715489280. Its totient is φ = 3783827520.

The previous prime is 12125505649. The next prime is 12125505659. The reversal of 12125505654 is 45650552121.

12125505654 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 550 + 56 + 54 = 666.

12125505654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12125505649) and next prime (12125505659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125505659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45487 + ... + 162234.

It is an arithmetic number, because the mean of its divisors is an integer number (448679520).

Almost surely, 2^12125505654 is an apocalyptic number.

12125505654 is an abundant number, since it is smaller than the sum of its proper divisors (16589983626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12125505654 is a wasteful number, since it uses less digits than its factorization.

12125505654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207802 (or 207796 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 12125505654 in words is "twelve billion, one hundred twenty-five million, five hundred five thousand, six hundred fifty-four".