6540378072825 has 48 divisors (see below), whose sum is σ = 10854925526016. Its totient is φ = 3474828340800.

The previous prime is 6540378072773. The next prime is 6540378072829. The reversal of 6540378072825 is 5282708730456.

6540378072825 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6540378072825 - 2²⁴ = 6540361295609 is a prime.

It is a super-2 number, since 2×6540378072825² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6540378072829) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37863604 + ... + 38035946.

It is an arithmetic number, because the mean of its divisors is an integer number (226144281792).

Almost surely, 2^{6540378072825} is an apocalyptic number.

It is an amenable number.

6540378072825 is a deficient number, since it is larger than the sum of its proper divisors (4314547453191).

6540378072825 is a wasteful number, since it uses less digits than its factorization.

6540378072825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174294 (or 174289 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 6540378072825 in words is "six trillion, five hundred forty billion, three hundred seventy-eight million, seventy-two thousand, eight hundred twenty-five".