6481800125 has 36 divisors (see below), whose sum is σ = 8560032156. Its totient is φ = 4899560400.

The previous prime is 6481800079. The next prime is 6481800161. The reversal of 6481800125 is 5210081846.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 207417604 + 6274382521 = 14402^2 + 79211^2 .

It is not a de Polignac number, because 6481800125 - 2²² = 6477605821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17102186 + ... + 17102564.

It is an arithmetic number, because the mean of its divisors is an integer number (237778671).

Almost surely, 2^6481800125 is an apocalyptic number.

It is an amenable number.

6481800125 is a deficient number, since it is larger than the sum of its proper divisors (2078232031).

6481800125 is an frugal number, since it uses more digits than its factorization.

6481800125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 6481800125 is about 80509.6275298799. The cubic root of 6481800125 is about 1864.5121236047.

The spelling of 6481800125 in words is "six billion, four hundred eighty-one million, eight hundred thousand, one hundred twenty-five".