6540503015125 has 16 divisors (see below), whose sum is σ = 8188297174512. Its totient is φ = 5215896379200.

The previous prime is 6540503015117. The next prime is 6540503015131. The reversal of 6540503015125 is 5215103050456.

It is a happy number.

6540503015125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 4378447440676 + 2162055574449 = 2092474^2 + 1470393^2 .

It is not a de Polignac number, because 6540503015125 - 2³ = 6540503015117 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 15 ways as a sum of consecutive naturals, for example, 82490382 + ... + 82569631.

It is an arithmetic number, because the mean of its divisors is an integer number (511768573407).

Almost surely, 2^{6540503015125} is an apocalyptic number.

It is an amenable number.

6540503015125 is a deficient number, since it is larger than the sum of its proper divisors (1647794159387).

6540503015125 is a wasteful number, since it uses less digits than its factorization.

6540503015125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165060345 (or 165060335 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 6540503015125 in words is "six trillion, five hundred forty billion, five hundred three million, fifteen thousand, one hundred twenty-five".