115643225 has 6 divisors (see below), whose sum is σ = 143397630. Its totient is φ = 92514560.

The previous prime is 115643219. The next prime is 115643239. The reversal of 115643225 is 522346511.

It can be written as a sum of positive squares in 3 ways, for example, as 9223369 + 106419856 = 3037^2 + 10316^2 .

It is not a de Polignac number, because 115643225 - 2¹⁶ = 115577689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2312840 + ... + 2312889.

It is an arithmetic number, because the mean of its divisors is an integer number (23899605).

Almost surely, 2^115643225 is an apocalyptic number.

It is an amenable number.

115643225 is a deficient number, since it is larger than the sum of its proper divisors (27754405).

115643225 is an equidigital number, since it uses as much as digits as its factorization.

115643225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625739 (or 4625734 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 115643225 is about 10753.7539956984. The cubic root of 115643225 is about 487.1993851232.

Adding to 115643225 its reverse (522346511), we get a palindrome (637989736).

The spelling of 115643225 in words is "one hundred fifteen million, six hundred forty-three thousand, two hundred twenty-five".