2540525 has 12 divisors (see below), whose sum is σ = 3393012. Its totient is φ = 1875840.

The previous prime is 2540519. The next prime is 2540533. The reversal of 2540525 is 5250452.

2540525 = 300² + 301² + ... + 325².

It can be written as a sum of positive squares in 6 ways, for example, as 1069156 + 1471369 = 1034^2 + 1213^2 .

It is not a de Polignac number, because 2540525 - 2⁸ = 2540269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2540525.

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 11 ways as a sum of consecutive naturals, for example, 3584 + ... + 4233.

It is an arithmetic number, because the mean of its divisors is an integer number (282751).

2^2540525 is an apocalyptic number.

2540525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2540525 is a deficient number, since it is larger than the sum of its proper divisors (852487).

2540525 is a wasteful number, since it uses less digits than its factorization.

2540525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7840 (or 7835 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2540525 is about 1593.9024436897. The cubic root of 2540525 is about 136.4502987843.

Adding to 2540525 its reverse (5250452), we get a palindrome (7790977).

The spelling of 2540525 in words is "two million, five hundred forty thousand, five hundred twenty-five".