115225213 has 4 divisors (see below), whose sum is σ = 116683840. Its totient is φ = 113766588.

The previous prime is 115225181. The next prime is 115225249. The reversal of 115225213 is 312522511.

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 115225213 - 2⁵ = 115225181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115225273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729195 + ... + 729352.

It is an arithmetic number, because the mean of its divisors is an integer number (29170960).

Almost surely, 2^115225213 is an apocalyptic number.

It is an amenable number.

115225213 is a deficient number, since it is larger than the sum of its proper divisors (1458627).

115225213 is an equidigital number, since it uses as much as digits as its factorization.

115225213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458626.

The product of its digits is 600, while the sum is 22.

The square root of 115225213 is about 10734.3007690301. The cubic root of 115225213 is about 486.6116548710.

Adding to 115225213 its reverse (312522511), we get a palindrome (427747724).

The spelling of 115225213 in words is "one hundred fifteen million, two hundred twenty-five thousand, two hundred thirteen".