2125873840 has 80 divisors (see below), whose sum is σ = 5042489760. Its totient is φ = 833269760.

The previous prime is 2125873837. The next prime is 2125873889. The reversal of 2125873840 is 483785212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2125873793 and 2125873802.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2175432 + ... + 2176408.

It is an arithmetic number, because the mean of its divisors is an integer number (63031122).

Almost surely, 2^2125873840 is an apocalyptic number.

2125873840 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 2125873840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2521244880).

2125873840 is an abundant number, since it is smaller than the sum of its proper divisors (2916615920).

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

2125873840 is a wasteful number, since it uses less digits than its factorization.

2125873840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 2125873840 is about 46107.1994378318. The cubic root of 2125873840 is about 1285.8169977439.

The spelling of 2125873840 in words is "two billion, one hundred twenty-five million, eight hundred seventy-three thousand, eight hundred forty".