123123225 has 24 divisors (see below), whose sum is σ = 203890720. Its totient is φ = 65560320.

The previous prime is 123123151. The next prime is 123123229. The reversal of 123123225 is 522321321.

It is not a de Polignac number, because 123123225 - 2⁸ = 123122969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123123229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74862 + ... + 76488.

Almost surely, 2^123123225 is an apocalyptic number.

123123225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123123225 is a deficient number, since it is larger than the sum of its proper divisors (80767495).

123123225 is a wasteful number, since it uses less digits than its factorization.

123123225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649 (or 2644 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 123123225 is about 11096.0905277490. The cubic root of 123123225 is about 497.4850041354.

Adding to 123123225 its reverse (522321321), we get a palindrome (645444546).

The spelling of 123123225 in words is "one hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-five".