6512545541525 has 12 divisors (see below), whose sum is σ = 8078637650244. Its totient is φ = 5208048576000.

The previous prime is 6512545541507. The next prime is 6512545541543. The reversal of 6512545541525 is 5251455452156.

It is an interprime number because it is at equal distance from previous prime (6512545541507) and next prime (6512545541543).

It can be written as a sum of positive squares in 6 ways, for example, as 540157382116 + 5972388159409 = 734954^2 + 2443847^2 .

It is not a de Polignac number, because 6512545541525 - 2¹⁸ = 6512545279381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49629596 + ... + 49760645.

It is an arithmetic number, because the mean of its divisors is an integer number (673219804187).

Almost surely, 2^{6512545541525} is an apocalyptic number.

It is an amenable number.

6512545541525 is a deficient number, since it is larger than the sum of its proper divisors (1566092108719).

6512545541525 is a wasteful number, since it uses less digits than its factorization.

6512545541525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99392872 (or 99392867 counting only the distinct ones).

The product of its digits is 6000000, while the sum is 50.

The spelling of 6512545541525 in words is "six trillion, five hundred twelve billion, five hundred forty-five million, five hundred forty-one thousand, five hundred twenty-five".