12525681888 has 72 divisors (see below), whose sum is σ = 36939186648. Its totient is φ = 4175224704.

The previous prime is 12525681853. The next prime is 12525681893. The reversal of 12525681888 is 88818652521.

12525681888 is a `hidden beast` number, since 12 + 52 + 568 + 18 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797631 + ... + 813182.

It is an arithmetic number, because the mean of its divisors is an integer number (513044259).

Almost surely, 2^12525681888 is an apocalyptic number.

12525681888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12525681888 is an abundant number, since it is smaller than the sum of its proper divisors (24413504760).

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

12525681888 is an equidigital number, since it uses as much as digits as its factorization.

12525681888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610838 (or 1610818 counting only the distinct ones).

The product of its digits is 2457600, while the sum is 54.

The spelling of 12525681888 in words is "twelve billion, five hundred twenty-five million, six hundred eighty-one thousand, eight hundred eighty-eight".