1325133544 has 64 divisors (see below), whose sum is σ = 3016776960. Its totient is φ = 532700160.

The previous prime is 1325133529. The next prime is 1325133559. The reversal of 1325133544 is 4453315231.

It is an interprime number because it is at equal distance from previous prime (1325133529) and next prime (1325133559).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299589 + ... + 303979.

It is an arithmetic number, because the mean of its divisors is an integer number (47137140).

Almost surely, 2^1325133544 is an apocalyptic number.

1325133544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1325133544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1508388480).

1325133544 is an abundant number, since it is smaller than the sum of its proper divisors (1691643416).

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

1325133544 is a wasteful number, since it uses less digits than its factorization.

1325133544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738 (or 4734 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 1325133544 is about 36402.3837680996. The cubic root of 1325133544 is about 1098.3815162324.

Adding to 1325133544 its reverse (4453315231), we get a palindrome (5778448775).

The spelling of 1325133544 in words is "one billion, three hundred twenty-five million, one hundred thirty-three thousand, five hundred forty-four".