2028972125 has 16 divisors (see below), whose sum is σ = 2593923696. Its totient is φ = 1583584000.

The previous prime is 2028972091. The next prime is 2028972139. The reversal of 2028972125 is 5212798202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 501491236 + 1527480889 = 22394^2 + 39083^2 .

It is not a de Polignac number, because 2028972125 - 2⁶ = 2028972061 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 192824 + ... + 203073.

It is an arithmetic number, because the mean of its divisors is an integer number (162120231).

Almost surely, 2^2028972125 is an apocalyptic number.

2028972125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2028972125 is a deficient number, since it is larger than the sum of its proper divisors (564951571).

2028972125 is an equidigital number, since it uses as much as digits as its factorization.

2028972125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395953 (or 395943 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2028972125 is about 45044.1131003819. The cubic root of 2028972125 is about 1265.9756724775.

The spelling of 2028972125 in words is "two billion, twenty-eight million, nine hundred seventy-two thousand, one hundred twenty-five".