115525321217 has 4 divisors (see below), whose sum is σ = 115631211696. Its totient is φ = 115419430740.

The previous prime is 115525321181. The next prime is 115525321267. The reversal of 115525321217 is 712123525511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115525321217 - 2¹⁰ = 115525320193 is a prime.

It is a super-2 number, since 2×115525321217² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115525321267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52943603 + ... + 52945784.

It is an arithmetic number, because the mean of its divisors is an integer number (28907802924).

Almost surely, 2^115525321217 is an apocalyptic number.

It is an amenable number.

115525321217 is a deficient number, since it is larger than the sum of its proper divisors (105890479).

115525321217 is a wasteful number, since it uses less digits than its factorization.

115525321217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105890478.

The product of its digits is 21000, while the sum is 35.

Adding to 115525321217 its reverse (712123525511), we get a palindrome (827648846728).

The spelling of 115525321217 in words is "one hundred fifteen billion, five hundred twenty-five million, three hundred twenty-one thousand, two hundred seventeen".