2125186800 has 240 divisors, whose sum is σ = 7489342080. Its totient is φ = 510848000.

The previous prime is 2125186799. The next prime is 2125186823. The reversal of 2125186800 is 86815212.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1728586 + ... + 1729814.

It is an arithmetic number, because the mean of its divisors is an integer number (31205592).

Almost surely, 2^2125186800 is an apocalyptic number.

2125186800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125186800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3744671040).

2125186800 is an abundant number, since it is smaller than the sum of its proper divisors (5364155280).

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

2125186800 is a wasteful number, since it uses less digits than its factorization.

2125186800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 2125186800 is about 46099.7483724152. The cubic root of 2125186800 is about 1285.6784660215.

The spelling of 2125186800 in words is "two billion, one hundred twenty-five million, one hundred eighty-six thousand, eight hundred".