6722551257 has 16 divisors (see below), whose sum is σ = 9030405120. Its totient is φ = 4448250000.

The previous prime is 6722551249. The next prime is 6722551279. The reversal of 6722551257 is 7521552276.

It is not a de Polignac number, because 6722551257 - 2³ = 6722551249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6722551237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591882 + ... + 603132.

It is an arithmetic number, because the mean of its divisors is an integer number (564400320).

Almost surely, 2^6722551257 is an apocalyptic number.

It is an amenable number.

6722551257 is a deficient number, since it is larger than the sum of its proper divisors (2307853863).

6722551257 is a wasteful number, since it uses less digits than its factorization.

6722551257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724.

The product of its digits is 294000, while the sum is 42.

The square root of 6722551257 is about 81991.1657253390. The cubic root of 6722551257 is about 1887.3163724231.

The spelling of 6722551257 in words is "six billion, seven hundred twenty-two million, five hundred fifty-one thousand, two hundred fifty-seven".