6815025055 has 4 divisors (see below), whose sum is σ = 8178030072. Its totient is φ = 5452020040.

The previous prime is 6815025053. The next prime is 6815025073. The reversal of 6815025055 is 5505205186.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6815025055 - 2¹ = 6815025053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6815025053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681502501 + ... + 681502510.

It is an arithmetic number, because the mean of its divisors is an integer number (2044507518).

Almost surely, 2^6815025055 is an apocalyptic number.

6815025055 is a deficient number, since it is larger than the sum of its proper divisors (1363005017).

6815025055 is a wasteful number, since it uses less digits than its factorization.

6815025055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363005016.

The product of its (nonzero) digits is 60000, while the sum is 37.

The square root of 6815025055 is about 82553.1650210941. The cubic root of 6815025055 is about 1895.9308162806.

The spelling of 6815025055 in words is "six billion, eight hundred fifteen million, twenty-five thousand, fifty-five".