123305225 has 6 divisors (see below), whose sum is σ = 152898510. Its totient is φ = 98644160.

The previous prime is 123305177. The next prime is 123305227. The reversal of 123305225 is 522503321.

It can be written as a sum of positive squares in 3 ways, for example, as 2393209 + 120912016 = 1547^2 + 10996^2 .

It is not a de Polignac number, because 123305225 - 2²² = 119110921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123305225.

It is not an unprimeable number, because it can be changed into a prime (123305227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2466080 + ... + 2466129.

It is an arithmetic number, because the mean of its divisors is an integer number (25483085).

Almost surely, 2^123305225 is an apocalyptic number.

It is an amenable number.

123305225 is a deficient number, since it is larger than the sum of its proper divisors (29593285).

123305225 is an equidigital number, since it uses as much as digits as its factorization.

123305225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932219 (or 4932214 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 123305225 is about 11104.2885859473. The cubic root of 123305225 is about 497.7300098857.

Adding to 123305225 its reverse (522503321), we get a palindrome (645808546).

The spelling of 123305225 in words is "one hundred twenty-three million, three hundred five thousand, two hundred twenty-five".