1323725205 has 32 divisors (see below), whose sum is σ = 2312489088. Its totient is φ = 641254400.

The previous prime is 1323725197. The next prime is 1323725261. The reversal of 1323725205 is 5025273231.

It is a happy number.

It is not a de Polignac number, because 1323725205 - 2³ = 1323725197 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 241657 + ... + 247073.

It is an arithmetic number, because the mean of its divisors is an integer number (72265284).

Almost surely, 2^1323725205 is an apocalyptic number.

1323725205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323725205 is a deficient number, since it is larger than the sum of its proper divisors (988763883).

1323725205 is a wasteful number, since it uses less digits than its factorization.

1323725205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6917.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 1323725205 is about 36383.0345765715. The cubic root of 1323725205 is about 1097.9922619154.

Adding to 1323725205 its reverse (5025273231), we get a palindrome (6348998436).

The spelling of 1323725205 in words is "one billion, three hundred twenty-three million, seven hundred twenty-five thousand, two hundred five".