1325240000 has 140 divisors (see below), whose sum is σ = 3756410064. Its totient is φ = 454272000.

The previous prime is 1325239997. The next prime is 1325240009. The reversal of 1325240000 is 425231.

It is a tau number, because it is divible by the number of its divisors (140).

It is a super-2 number, since 2×1325240000² = 3512522115200000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325240009) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 277634 + ... + 282366.

Almost surely, 2^1325240000 is an apocalyptic number.

1325240000 is a gapful number since it is divisible by the number (10) 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 1325240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878205032).

1325240000 is an abundant number, since it is smaller than the sum of its proper divisors (2431170064).

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

1325240000 is an frugal number, since it uses more digits than its factorization.

1325240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772 (or 4747 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1325240000 is about 36403.8459506685. The cubic root of 1325240000 is about 1098.4109286571.

Adding to 1325240000 its reverse (425231), we get a palindrome (1325665231).

The spelling of 1325240000 in words is "one billion, three hundred twenty-five million, two hundred forty thousand".