115224265809 has 9 divisors (see below), whose sum is σ = 166436521563. Its totient is φ = 76815498312.

The previous prime is 115224265757. The next prime is 115224265811. The reversal of 115224265809 is 908562422511.

The square root of 115224265809 is 339447.

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

115224265809 is a `hidden beast` number, since 1 + 1 + 5 + 22 + 42 + 6 + 580 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 65486345409 + 49737920400 = 255903^2 + 223020^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 115224265809 - 2²¹ = 115222168657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115224265829) 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 8 ways as a sum of consecutive naturals, for example, 961767 + ... + 1074915.

Almost surely, 2^115224265809 is an apocalyptic number.

115224265809 is the 339447-th square number.

115224265809 is the 169724-th centered octagonal number.

It is an amenable number.

115224265809 is a deficient number, since it is larger than the sum of its proper divisors (51212255754).

115224265809 is an frugal number, since it uses more digits than its factorization.

115224265809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226304 (or 113152 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 115224265809 in words is "one hundred fifteen billion, two hundred twenty-four million, two hundred sixty-five thousand, eight hundred nine".