915112258225 has 27 divisors (see below), whose sum is σ = 1247347034689. Its totient is φ = 665497923200.

The previous prime is 915112258223. The next prime is 915112258241. The reversal of 915112258225 is 522852211519.

It is a happy number.

The square root of 915112258225 is 956615.

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

It can be written as a sum of positive squares in 4 ways, for example, as 165980463649 + 749131794576 = 407407^2 + 865524^2 .

It is not a de Polignac number, because 915112258225 - 2¹ = 915112258223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (915112258223) 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, 52605129 + ... + 52622521.

Almost surely, 2^915112258225 is an apocalyptic number.

915112258225 is the 956615-th square number.

915112258225 is the 478308-th centered octagonal number.

It is an amenable number.

915112258225 is a deficient number, since it is larger than the sum of its proper divisors (332234776464).

915112258225 is an frugal number, since it uses more digits than its factorization.

915112258225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34818 (or 17409 counting only the distinct ones).

The product of its digits is 144000, while the sum is 43.

The spelling of 915112258225 in words is "nine hundred fifteen billion, one hundred twelve million, two hundred fifty-eight thousand, two hundred twenty-five".