2125687180 has 12 divisors (see below), whose sum is σ = 4463943120. Its totient is φ = 850274864.

The previous prime is 2125687169. The next prime is 2125687181. The reversal of 2125687180 is 817865212.

It is not an unprimeable number, because it can be changed into a prime (2125687181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53142160 + ... + 53142199.

It is an arithmetic number, because the mean of its divisors is an integer number (371995260).

Almost surely, 2^2125687180 is an apocalyptic number.

2125687180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125687180 is an abundant number, since it is smaller than the sum of its proper divisors (2338255940).

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

2125687180 is a wasteful number, since it uses less digits than its factorization.

2125687180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106284368 (or 106284366 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 2125687180 is about 46105.1751975849. The cubic root of 2125687180 is about 1285.7793633962.

The spelling of 2125687180 in words is "two billion, one hundred twenty-five million, six hundred eighty-seven thousand, one hundred eighty".