2142878925 has 48 divisors (see below), whose sum is σ = 3879340992. Its totient is φ = 1035110400.

The previous prime is 2142878921. The next prime is 2142878963. The reversal of 2142878925 is 5298782412.

It is not a de Polignac number, because 2142878925 - 2² = 2142878921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142878921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223837 + ... + 233213.

It is an arithmetic number, because the mean of its divisors is an integer number (80819604).

Almost surely, 2^2142878925 is an apocalyptic number.

2142878925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2142878925 is a deficient number, since it is larger than the sum of its proper divisors (1736462067).

2142878925 is a wasteful number, since it uses less digits than its factorization.

2142878925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9678 (or 9673 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 2142878925 is about 46291.2402620625. The cubic root of 2142878925 is about 1289.2363577222.

The spelling of 2142878925 in words is "two billion, one hundred forty-two million, eight hundred seventy-eight thousand, nine hundred twenty-five".