1325550320 has 40 divisors (see below), whose sum is σ = 3083641920. Its totient is φ = 529921280.

The previous prime is 1325550307. The next prime is 1325550323. The reversal of 1325550320 is 230555231.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1325550320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325550323) 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 7 ways as a sum of consecutive naturals, for example, 187001 + ... + 193959.

It is an arithmetic number, because the mean of its divisors is an integer number (77091048).

Almost surely, 2^1325550320 is an apocalyptic number.

1325550320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325550320 is an abundant number, since it is smaller than the sum of its proper divisors (1758091600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1325550320 is a wasteful number, since it uses less digits than its factorization.

1325550320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353 (or 9347 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 1325550320 is about 36408.1078882163. The cubic root of 1325550320 is about 1098.4966570981.

The spelling of 1325550320 in words is "one billion, three hundred twenty-five million, five hundred fifty thousand, three hundred twenty".