123231225 has 48 divisors (see below), whose sum is σ = 221846912. Its totient is φ = 59996160.

The previous prime is 123231223. The next prime is 123231233. The reversal of 123231225 is 522132321.

It is not a de Polignac number, because 123231225 - 2¹ = 123231223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123231223) 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 47 ways as a sum of consecutive naturals, for example, 93924 + ... + 95226.

Almost surely, 2^123231225 is an apocalyptic number.

123231225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123231225 is a deficient number, since it is larger than the sum of its proper divisors (98615687).

123231225 is a wasteful number, since it uses less digits than its factorization.

123231225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1421 counting only the distinct ones).

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

The square root of 123231225 is about 11100.9560399094. The cubic root of 123231225 is about 497.6304212665.

Adding to 123231225 its reverse (522132321), we get a palindrome (645363546).

The spelling of 123231225 in words is "one hundred twenty-three million, two hundred thirty-one thousand, two hundred twenty-five".