2543525 has 6 divisors (see below), whose sum is σ = 3154002. Its totient is φ = 2034800.

The previous prime is 2543509. The next prime is 2543537. The reversal of 2543525 is 5253452.

It can be written as a sum of positive squares in 3 ways, for example, as 37636 + 2505889 = 194^2 + 1583^2 .

It is not a de Polignac number, because 2543525 - 2⁴ = 2543509 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2543494 and 2543503.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 50846 + ... + 50895.

It is an arithmetic number, because the mean of its divisors is an integer number (525667).

2^2543525 is an apocalyptic number.

2543525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2543525 is a deficient number, since it is larger than the sum of its proper divisors (610477).

2543525 is a wasteful number, since it uses less digits than its factorization.

2543525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101751 (or 101746 counting only the distinct ones).

The product of its digits is 6000, while the sum is 26.

The square root of 2543525 is about 1594.8432524860. The cubic root of 2543525 is about 136.5039871458.

Adding to 2543525 its reverse (5253452), we get a palindrome (7796977).

The spelling of 2543525 in words is "two million, five hundred forty-three thousand, five hundred twenty-five".