115525278 has 80 divisors (see below), whose sum is σ = 284621040. Its totient is φ = 34732800.

The previous prime is 115525253. The next prime is 115525279. The reversal of 115525278 is 872525511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115525279) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 429328 + ... + 429596.

It is an arithmetic number, because the mean of its divisors is an integer number (3557763).

Almost surely, 2^115525278 is an apocalyptic number.

115525278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115525278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142310520).

115525278 is an abundant number, since it is smaller than the sum of its proper divisors (169095762).

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

115525278 is a wasteful number, since it uses less digits than its factorization.

115525278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 526 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 115525278 is about 10748.2686047568. The cubic root of 115525278 is about 487.0336937533.

The spelling of 115525278 in words is "one hundred fifteen million, five hundred twenty-five thousand, two hundred seventy-eight".