2081987125 has 16 divisors (see below), whose sum is σ = 2682141696. Its totient is φ = 1611858000.

The previous prime is 2081987087. The next prime is 2081987137. The reversal of 2081987125 is 5217891802.

It is a happy number.

It is not a de Polignac number, because 2081987125 - 2¹¹ = 2081985077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264769 + ... + 272518.

It is an arithmetic number, because the mean of its divisors is an integer number (167633856).

Almost surely, 2^2081987125 is an apocalyptic number.

2081987125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2081987125 is a deficient number, since it is larger than the sum of its proper divisors (600154571).

2081987125 is an equidigital number, since it uses as much as digits as its factorization.

2081987125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537333 (or 537323 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2081987125 is about 45628.7971022687. The cubic root of 2081987125 is about 1276.9072314757.

The spelling of 2081987125 in words is "two billion, eighty-one million, nine hundred eighty-seven thousand, one hundred twenty-five".