8115307225 has 27 divisors (see below), whose sum is σ = 10327093023. Its totient is φ = 6326129040.

The previous prime is 8115307223. The next prime is 8115307229. The reversal of 8115307225 is 5227035118.

The square root of 8115307225 is 90085.

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

It can be written as a sum of positive squares in only one way, i.e., 2921510601 + 5193796624 = 54051^2 + 72068^2 .

It is not a de Polignac number, because 8115307225 - 2¹ = 8115307223 is a prime.

It is a super-2 number, since 2×8115307225² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8115307223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 19368066 + ... + 19368484.

Almost surely, 2^8115307225 is an apocalyptic number.

8115307225 is the 90085-th square number.

8115307225 is the 45043-rd centered octagonal number.

It is an amenable number.

8115307225 is a deficient number, since it is larger than the sum of its proper divisors (2211785798).

8115307225 is an frugal number, since it uses more digits than its factorization.

8115307225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The cubic root of 8115307225 is about 2009.5631357521.

The spelling of 8115307225 in words is "eight billion, one hundred fifteen million, three hundred seven thousand, two hundred twenty-five".