1325520340 has 12 divisors (see below), whose sum is σ = 2783592756. Its totient is φ = 530208128.

The previous prime is 1325520307. The next prime is 1325520341. The reversal of 1325520340 is 430255231.

It can be written as a sum of positive squares in 2 ways, for example, as 454798276 + 870722064 = 21326^2 + 29508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325520341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33137989 + ... + 33138028.

It is an arithmetic number, because the mean of its divisors is an integer number (231966063).

Almost surely, 2^1325520340 is an apocalyptic number.

1325520340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325520340 is an abundant number, since it is smaller than the sum of its proper divisors (1458072416).

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

1325520340 is a wasteful number, since it uses less digits than its factorization.

1325520340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66276026 (or 66276024 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1325520340 is about 36407.6961644101. The cubic root of 1325520340 is about 1098.4883754615.

Adding to 1325520340 its reverse (430255231), we get a palindrome (1755775571).

The spelling of 1325520340 in words is "one billion, three hundred twenty-five million, five hundred twenty thousand, three hundred forty".