2540725917 has 16 divisors (see below), whose sum is σ = 3408401280. Its totient is φ = 1683460800.

The previous prime is 2540725903. The next prime is 2540725937. The reversal of 2540725917 is 7195270452.

It is not a de Polignac number, because 2540725917 - 2¹⁴ = 2540709533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540725937) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 430567 + ... + 436427.

It is an arithmetic number, because the mean of its divisors is an integer number (213025080).

Almost surely, 2^2540725917 is an apocalyptic number.

It is an amenable number.

2540725917 is a deficient number, since it is larger than the sum of its proper divisors (867675363).

2540725917 is a wasteful number, since it uses less digits than its factorization.

2540725917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 2540725917 is about 50405.6139432901. The cubic root of 2540725917 is about 1364.5389573926.

The spelling of 2540725917 in words is "two billion, five hundred forty million, seven hundred twenty-five thousand, nine hundred seventeen".