2540555525 has 6 divisors (see below), whose sum is σ = 3150288882. Its totient is φ = 2032444400.

The previous prime is 2540555519. The next prime is 2540555557. The reversal of 2540555525 is 5255550452.

It can be written as a sum of positive squares in 3 ways, for example, as 181899169 + 2358656356 = 13487^2 + 48566^2 .

It is not a de Polignac number, because 2540555525 - 2⁴ = 2540555509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50811086 + ... + 50811135.

It is an arithmetic number, because the mean of its divisors is an integer number (525048147).

Almost surely, 2^2540555525 is an apocalyptic number.

2540555525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2540555525 is a deficient number, since it is larger than the sum of its proper divisors (609733357).

2540555525 is a wasteful number, since it uses less digits than its factorization.

2540555525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101622231 (or 101622226 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 38.

The square root of 2540555525 is about 50403.9237063941. The cubic root of 2540555525 is about 1364.5084527616.

The spelling of 2540555525 in words is "two billion, five hundred forty million, five hundred fifty-five thousand, five hundred twenty-five".