2125015644 has 12 divisors (see below), whose sum is σ = 4958369864. Its totient is φ = 708338544.

The previous prime is 2125015597. The next prime is 2125015649. The reversal of 2125015644 is 4465105212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125015649) 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 3 ways as a sum of consecutive naturals, for example, 88542307 + ... + 88542330.

Almost surely, 2^2125015644 is an apocalyptic number.

It is an amenable number.

2125015644 is an abundant number, since it is smaller than the sum of its proper divisors (2833354220).

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

2125015644 is a wasteful number, since it uses less digits than its factorization.

2125015644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177084644 (or 177084642 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2125015644 is about 46097.8919691562. The cubic root of 2125015644 is about 1285.6439502335.

The spelling of 2125015644 in words is "two billion, one hundred twenty-five million, fifteen thousand, six hundred forty-four".