6539778015325 has 48 divisors (see below), whose sum is σ = 8414292700800. Its totient is φ = 5038947014400.

The previous prime is 6539778015313. The next prime is 6539778015341. The reversal of 6539778015325 is 5235108779356.

It is not a de Polignac number, because 6539778015325 - 2³⁵ = 6505418276957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55367080 + ... + 55485070.

It is an arithmetic number, because the mean of its divisors is an integer number (175297764600).

Almost surely, 2^{6539778015325} is an apocalyptic number.

It is an amenable number.

6539778015325 is a deficient number, since it is larger than the sum of its proper divisors (1874514685475).

6539778015325 is a wasteful number, since it uses less digits than its factorization.

6539778015325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118822 (or 118817 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 61.

The spelling of 6539778015325 in words is "six trillion, five hundred thirty-nine billion, seven hundred seventy-eight million, fifteen thousand, three hundred twenty-five".