8568279225 has 225 divisors, whose sum is σ = 18545825485. Its totient is φ = 3909945600.

The previous prime is 8568279143. The next prime is 8568279227. The reversal of 8568279225 is 5229728658.

It is a happy number.

The square root of 8568279225 is 92565.

It is a perfect power (a square), and thus also a powerful number.

8568279225 is a `hidden beast` number, since 8 + 568 + 2 + 79 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 200420649 + 8367858576 = 14157^2 + 91476^2 .

It is a tau number, because it is divible by the number of its divisors (225).

It is a de Polignac number, because none of the positive numbers 2^k-8568279225 is a prime.

Its product of digits (4838400) is a multiple of the sum of its prime divisors (36).

It is not an unprimeable number, because it can be changed into a prime (8568279227) by changing a digit.

It is a polite number, since it can be written in 224 ways as a sum of consecutive naturals, for example, 504016417 + ... + 504016433.

Almost surely, 2^8568279225 is an apocalyptic number.

8568279225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8568279225 is the 92565-th square number.

8568279225 is the 46283-rd centered octagonal number.

It is an amenable number.

8568279225 is an abundant number, since it is smaller than the sum of its proper divisors (9977546260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8568279225 is an equidigital number, since it uses as much as digits as its factorization.

8568279225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 36 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The cubic root of 8568279225 is about 2046.2775377928.

The spelling of 8568279225 in words is "eight billion, five hundred sixty-eight million, two hundred seventy-nine thousand, two hundred twenty-five".