8215022205 has 24 divisors (see below), whose sum is σ = 15334709208. Its totient is φ = 4044318336.

The previous prime is 8215022141. The next prime is 8215022239. The reversal of 8215022205 is 5022205128.

It can be written as a sum of positive squares in 4 ways, for example, as 713210436 + 7501811769 = 26706^2 + 86613^2 .

It is not a de Polignac number, because 8215022205 - 2⁶ = 8215022141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7020802 + ... + 7021971.

It is an arithmetic number, because the mean of its divisors is an integer number (638946217).

Almost surely, 2^8215022205 is an apocalyptic number.

It is an amenable number.

8215022205 is a deficient number, since it is larger than the sum of its proper divisors (7119687003).

8215022205 is a wasteful number, since it uses less digits than its factorization.

8215022205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14042797 (or 14042794 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 8215022205 is about 90636.7596783998. The cubic root of 8215022205 is about 2017.7603354806.

The spelling of 8215022205 in words is "eight billion, two hundred fifteen million, twenty-two thousand, two hundred five".