2581109125 has 16 divisors (see below), whose sum is σ = 3681400320. Its totient is φ = 1769902800.

The previous prime is 2581109119. The next prime is 2581109137. The reversal of 2581109125 is 5219011852.

It is not a de Polignac number, because 2581109125 - 2¹³ = 2581100933 is a prime.

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, 1474045 + ... + 1475794.

It is an arithmetic number, because the mean of its divisors is an integer number (230087520).

Almost surely, 2^2581109125 is an apocalyptic number.

2581109125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2581109125 is a deficient number, since it is larger than the sum of its proper divisors (1100291195).

2581109125 is an equidigital number, since it uses as much as digits as its factorization.

2581109125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949861 (or 2949851 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 2581109125 is about 50804.6171622226. The cubic root of 2581109125 is about 1371.7304797230.

The spelling of 2581109125 in words is "two billion, five hundred eighty-one million, one hundred nine thousand, one hundred twenty-five".