115431225 has 72 divisors (see below), whose sum is σ = 236359872. Its totient is φ = 48672000.

The previous prime is 115431209. The next prime is 115431271. The reversal of 115431225 is 522134511.

It is a happy number.

It is not a de Polignac number, because 115431225 - 2⁴ = 115431209 is a prime.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 115431195 and 115431204.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 88075 + ... + 89375.

It is an arithmetic number, because the mean of its divisors is an integer number (3282776).

Almost surely, 2^115431225 is an apocalyptic number.

115431225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115431225 is an abundant number, since it is smaller than the sum of its proper divisors (120928647).

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

115431225 is a wasteful number, since it uses less digits than its factorization.

115431225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1329 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 115431225 is about 10743.8924510626. The cubic root of 115431225 is about 486.9014877189.

Adding to 115431225 its reverse (522134511), we get a palindrome (637565736).

The spelling of 115431225 in words is "one hundred fifteen million, four hundred thirty-one thousand, two hundred twenty-five".