2125520444 has 12 divisors (see below), whose sum is σ = 3806164824. Its totient is φ = 1038044784.

The previous prime is 2125520429. The next prime is 2125520471. The reversal of 2125520444 is 4440255212.

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 3 ways as a sum of consecutive naturals, for example, 6178667 + ... + 6179010.

It is an arithmetic number, because the mean of its divisors is an integer number (317180402).

Almost surely, 2^2125520444 is an apocalyptic number.

It is an amenable number.

2125520444 is a deficient number, since it is larger than the sum of its proper divisors (1680644380).

2125520444 is a wasteful number, since it uses less digits than its factorization.

2125520444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12357724 (or 12357722 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 2125520444 is about 46103.3669486297. The cubic root of 2125520444 is about 1285.7457442579.

Adding to 2125520444 its reverse (4440255212), we get a palindrome (6565775656).

The spelling of 2125520444 in words is "two billion, one hundred twenty-five million, five hundred twenty thousand, four hundred forty-four".