82255805 has 4 divisors (see below), whose sum is σ = 98706972. Its totient is φ = 65804640.

The previous prime is 82255801. The next prime is 82255819. The reversal of 82255805 is 50855228.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65723449 + 16532356 = 8107^2 + 4066^2 .

It is not a de Polignac number, because 82255805 - 2² = 82255801 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 (82255801) 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, 8225576 + ... + 8225585.

It is an arithmetic number, because the mean of its divisors is an integer number (24676743).

Almost surely, 2^82255805 is an apocalyptic number.

It is an amenable number.

82255805 is a deficient number, since it is larger than the sum of its proper divisors (16451167).

82255805 is a wasteful number, since it uses less digits than its factorization.

82255805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16451166.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 82255805 is about 9069.4986079717. The cubic root of 82255805 is about 434.8994438816.

The spelling of 82255805 in words is "eighty-two million, two hundred fifty-five thousand, eight hundred five".