6542025549 has 4 divisors (see below), whose sum is σ = 8722700736. Its totient is φ = 4361350364.

The previous prime is 6542025521. The next prime is 6542025557. The reversal of 6542025549 is 9455202456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6542025549 - 2¹⁶ = 6541960013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6542025549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542025509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090337589 + ... + 1090337594.

It is an arithmetic number, because the mean of its divisors is an integer number (2180675184).

Almost surely, 2^6542025549 is an apocalyptic number.

It is an amenable number.

6542025549 is a deficient number, since it is larger than the sum of its proper divisors (2180675187).

6542025549 is a wasteful number, since it uses less digits than its factorization.

6542025549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180675186.

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 6542025549 is about 80882.7889541403. The cubic root of 6542025549 is about 1870.2690137926.

The spelling of 6542025549 in words is "six billion, five hundred forty-two million, twenty-five thousand, five hundred forty-nine".