115225129 has 4 divisors (see below), whose sum is σ = 118035540. Its totient is φ = 112414720.

The previous prime is 115225081. The next prime is 115225151. The reversal of 115225129 is 921522511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41951529 + 73273600 = 6477^2 + 8560^2 .

It is a cyclic number.

It is not a de Polignac number, because 115225129 - 2⁷ = 115225001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115225097 and 115225106.

It is not an unprimeable number, because it can be changed into a prime (115220129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1405144 + ... + 1405225.

It is an arithmetic number, because the mean of its divisors is an integer number (29508885).

Almost surely, 2^115225129 is an apocalyptic number.

It is an amenable number.

115225129 is a deficient number, since it is larger than the sum of its proper divisors (2810411).

115225129 is an equidigital number, since it uses as much as digits as its factorization.

115225129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810410.

The product of its digits is 1800, while the sum is 28.

The square root of 115225129 is about 10734.2968563386. The cubic root of 115225129 is about 486.6115366232.

The spelling of 115225129 in words is "one hundred fifteen million, two hundred twenty-five thousand, one hundred twenty-nine".