1323243225 has 72 divisors (see below), whose sum is σ = 2443843584. Its totient is φ = 684000000.

The previous prime is 1323243211. The next prime is 1323243269. The reversal of 1323243225 is 5223423231.

1323243225 is a `hidden beast` number, since 13 + 2 + 324 + 322 + 5 = 666.

It is not a de Polignac number, because 1323243225 - 2²⁰ = 1322194649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1761600 + ... + 1762350.

It is an arithmetic number, because the mean of its divisors is an integer number (33942272).

Almost surely, 2^1323243225 is an apocalyptic number.

1323243225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323243225 is a deficient number, since it is larger than the sum of its proper divisors (1120600359).

1323243225 is a wasteful number, since it uses less digits than its factorization.

1323243225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 991 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 1323243225 is about 36376.4102819396. The cubic root of 1323243225 is about 1097.8589828553.

Adding to 1323243225 its reverse (5223423231), we get a palindrome (6546666456).

The spelling of 1323243225 in words is "one billion, three hundred twenty-three million, two hundred forty-three thousand, two hundred twenty-five".