6725281 has 2 divisors, whose sum is σ = 6725282. Its totient is φ = 6725280.

The previous prime is 6725273. The next prime is 6725309. The reversal of 6725281 is 1825276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6170256 + 555025 = 2484^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 6725281 - 2³ = 6725273 is a prime.

It is a super-2 number, since 2×6725281² = 90458809057922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6725261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3362640 + 3362641.

It is an arithmetic number, because the mean of its divisors is an integer number (3362641).

Almost surely, 2^6725281 is an apocalyptic number.

It is an amenable number.

6725281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6725281 is an equidigital number, since it uses as much as digits as its factorization.

6725281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 6725281 is about 2593.3146743116. The cubic root of 6725281 is about 188.7571790904.

The spelling of 6725281 in words is "six million, seven hundred twenty-five thousand, two hundred eighty-one".