6725517655 has 4 divisors (see below), whose sum is σ = 8070621192. Its totient is φ = 5380414120.

The previous prime is 6725517649. The next prime is 6725517661. The reversal of 6725517655 is 5567155276.

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

It is an interprime number because it is at equal distance from previous prime (6725517649) and next prime (6725517661).

It is not a de Polignac number, because 6725517655 - 2⁹ = 6725517143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6725517599 and 6725517608.

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 3 ways as a sum of consecutive naturals, for example, 672551761 + ... + 672551770.

It is an arithmetic number, because the mean of its divisors is an integer number (2017655298).

Almost surely, 2^6725517655 is an apocalyptic number.

6725517655 is a deficient number, since it is larger than the sum of its proper divisors (1345103537).

6725517655 is a wasteful number, since it uses less digits than its factorization.

6725517655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345103536.

The product of its digits is 2205000, while the sum is 49.

The square root of 6725517655 is about 82009.2534717882. The cubic root of 6725517655 is about 1887.5939311470.

The spelling of 6725517655 in words is "six billion, seven hundred twenty-five million, five hundred seventeen thousand, six hundred fifty-five".