123521325 has 12 divisors (see below), whose sum is σ = 204222048. Its totient is φ = 65878000.

The previous prime is 123521309. The next prime is 123521357. The reversal of 123521325 is 523125321.

It is a happy number.

It is not a de Polignac number, because 123521325 - 2⁴ = 123521309 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123521295 and 123521304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 823401 + ... + 823550.

It is an arithmetic number, because the mean of its divisors is an integer number (17018504).

Almost surely, 2^123521325 is an apocalyptic number.

123521325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123521325 is a deficient number, since it is larger than the sum of its proper divisors (80700723).

123521325 is a wasteful number, since it uses less digits than its factorization.

123521325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646964 (or 1646959 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 123521325 is about 11114.0148011418. The cubic root of 123521325 is about 498.0206076858.

Adding to 123521325 its reverse (523125321), we get a palindrome (646646646).

The spelling of 123521325 in words is "one hundred twenty-three million, five hundred twenty-one thousand, three hundred twenty-five".