123988225 has 27 divisors (see below), whose sum is σ = 164577481. Its totient is φ = 92643200.

The previous prime is 123988219. The next prime is 123988229. The reversal of 123988225 is 522889321.

The square root of 123988225 is 11135.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2900209 + 121088016 = 1703^2 + 11004^2 .

It is not a de Polignac number, because 123988225 - 2³ = 123988217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123988229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 946410 + ... + 946540.

Almost surely, 2^123988225 is an apocalyptic number.

123988225 is the 11135-th square number.

123988225 is the 5568-th centered octagonal number.

It is an amenable number.

123988225 is a deficient number, since it is larger than the sum of its proper divisors (40589256).

123988225 is an equidigital number, since it uses as much as digits as its factorization.

123988225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 153 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The cubic root of 123988225 is about 498.6473104287.

The spelling of 123988225 in words is "one hundred twenty-three million, nine hundred eighty-eight thousand, two hundred twenty-five".