82255681 has 2 divisors, whose sum is σ = 82255682. Its totient is φ = 82255680.

The previous prime is 82255637. The next prime is 82255727. The reversal of 82255681 is 18655228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 29257281 = 7280^2 + 5409^2 .

It is a cyclic number.

It is not a de Polignac number, because 82255681 - 2²⁵ = 48701249 is a prime.

It is a super-2 number, since 2×82255681² = 13531994113547522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82255681.

It is not a weakly prime, because it can be changed into another prime (82255081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41127840 + 41127841.

It is an arithmetic number, because the mean of its divisors is an integer number (41127841).

Almost surely, 2^82255681 is an apocalyptic number.

It is an amenable number.

82255681 is a deficient number, since it is larger than the sum of its proper divisors (1).

82255681 is an equidigital number, since it uses as much as digits as its factorization.

82255681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 37.

The square root of 82255681 is about 9069.4917718690. The cubic root of 82255681 is about 434.8992253456.

The spelling of 82255681 in words is "eighty-two million, two hundred fifty-five thousand, six hundred eighty-one".