115541225 has 6 divisors (see below), whose sum is σ = 143271150. Its totient is φ = 92432960.

The previous prime is 115541221. The next prime is 115541233. The reversal of 115541225 is 522145511.

115541225 = 1204² + 1205² + ... + 1278².

It can be written as a sum of positive squares in 3 ways, for example, as 4618201 + 110923024 = 2149^2 + 10532^2 .

It is not a de Polignac number, because 115541225 - 2² = 115541221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115541194 and 115541203.

It is not an unprimeable number, because it can be changed into a prime (115541221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2310800 + ... + 2310849.

It is an arithmetic number, because the mean of its divisors is an integer number (23878525).

Almost surely, 2^115541225 is an apocalyptic number.

It is an amenable number.

115541225 is a deficient number, since it is larger than the sum of its proper divisors (27729925).

115541225 is an equidigital number, since it uses as much as digits as its factorization.

115541225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621659 (or 4621654 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 115541225 is about 10749.0104195689. The cubic root of 115541225 is about 487.0561026122.

Adding to 115541225 its reverse (522145511), we get a palindrome (637686736).

The spelling of 115541225 in words is "one hundred fifteen million, five hundred forty-one thousand, two hundred twenty-five".