2581875 has 60 divisors (see below), whose sum is σ = 5117112. Its totient is φ = 1296000.

The previous prime is 2581861. The next prime is 2581877. The reversal of 2581875 is 5781852.

2581875 is a `hidden beast` number, since 2 + 581 + 8 + 75 = 666.

It is not a de Polignac number, because 2581875 - 2¹¹ = 2579827 is a prime.

Its product of digits (22400) is a multiple of the sum of its prime divisors (25).

It is not an unprimeable number, because it can be changed into a prime (2581877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 151867 + ... + 151883.

2^2581875 is an apocalyptic number.

2581875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2581875 is a deficient number, since it is larger than the sum of its proper divisors (2535237).

2581875 is an frugal number, since it uses more digits than its factorization.

2581875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 25 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 2581875 is about 1606.8213964221. The cubic root of 2581875 is about 137.1866141066.

The spelling of 2581875 in words is "two million, five hundred eighty-one thousand, eight hundred seventy-five".