2725281 has 12 divisors (see below), whose sum is σ = 4239508. Its totient is φ = 1677024.

The previous prime is 2725279. The next prime is 2725337. The reversal of 2725281 is 1825272.

It can be written as a sum of positive squares in 2 ways, for example, as 216225 + 2509056 = 465^2 + 1584^2 .

It is not a de Polignac number, because 2725281 - 2¹ = 2725279 is a prime.

It is a super-2 number, since 2×2725281² = 14854313057922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2725231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11530 + ... + 11763.

2^2725281 is an apocalyptic number.

It is an amenable number.

2725281 is a deficient number, since it is larger than the sum of its proper divisors (1514227).

2725281 is a wasteful number, since it uses less digits than its factorization.

2725281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23312 (or 23309 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2725281 is about 1650.8425121737. The cubic root of 2725281 is about 139.6809229971.

Subtracting from 2725281 its reverse (1825272), we obtain a palindrome (900009).

The spelling of 2725281 in words is "two million, seven hundred twenty-five thousand, two hundred eighty-one".