8505223253 has 2 divisors, whose sum is σ = 8505223254. Its totient is φ = 8505223252.

The previous prime is 8505223241. The next prime is 8505223273. The reversal of 8505223253 is 3523225058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8468232529 + 36990724 = 92023^2 + 6082^2 .

It is a cyclic number.

It is not a de Polignac number, because 8505223253 - 2²⁶ = 8438114389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8505223273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4252611626 + 4252611627.

It is an arithmetic number, because the mean of its divisors is an integer number (4252611627).

Almost surely, 2^8505223253 is an apocalyptic number.

It is an amenable number.

8505223253 is a deficient number, since it is larger than the sum of its proper divisors (1).

8505223253 is an equidigital number, since it uses as much as digits as its factorization.

8505223253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 8505223253 is about 92223.7672891321. The cubic root of 8505223253 is about 2041.2454951115.

The spelling of 8505223253 in words is "eight billion, five hundred five million, two hundred twenty-three thousand, two hundred fifty-three".