6545367066825 has 60 divisors (see below), whose sum is σ = 12124910302428. Its totient is φ = 3490681651200.

The previous prime is 6545367066803. The next prime is 6545367066827. The reversal of 6545367066825 is 5286607635456.

6545367066825 is a `hidden beast` number, since 6 + 5 + 4 + 536 + 70 + 6 + 6 + 8 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2936054834064 + 3609312232761 = 1713492^2 + 1899819^2 .

It is not a de Polignac number, because 6545367066825 - 2⁶ = 6545367066761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6545367066827) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 45030265 + ... + 45175385.

Almost surely, 2^{6545367066825} is an apocalyptic number.

It is an amenable number.

6545367066825 is a deficient number, since it is larger than the sum of its proper divisors (5579543235603).

6545367066825 is a wasteful number, since it uses less digits than its factorization.

6545367066825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167416 (or 167402 counting only the distinct ones).

The product of its (nonzero) digits is 217728000, while the sum is 63.

The spelling of 6545367066825 in words is "six trillion, five hundred forty-five billion, three hundred sixty-seven million, sixty-six thousand, eight hundred twenty-five".