2125344520 has 128 divisors (see below), whose sum is σ = 5329981440. Its totient is φ = 757785600.

The previous prime is 2125344517. The next prime is 2125344527. The reversal of 2125344520 is 254435212.

It is not an unprimeable number, because it can be changed into a prime (2125344527) 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, 1845945 + ... + 1847095.

It is an arithmetic number, because the mean of its divisors is an integer number (41640480).

Almost surely, 2^2125344520 is an apocalyptic number.

2125344520 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 2125344520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664990720).

2125344520 is an abundant number, since it is smaller than the sum of its proper divisors (3204636920).

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

2125344520 is a wasteful number, since it uses less digits than its factorization.

2125344520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2125344520 is about 46101.4589790822. The cubic root of 2125344520 is about 1285.7102706283.

Adding to 2125344520 its reverse (254435212), we get a palindrome (2379779732).

The spelling of 2125344520 in words is "two billion, one hundred twenty-five million, three hundred forty-four thousand, five hundred twenty".