1325765280 has 288 divisors, whose sum is σ = 5041782144. Its totient is φ = 286820352.

The previous prime is 1325765279. The next prime is 1325765291. The reversal of 1325765280 is 825675231.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1212414 + ... + 1213506.

It is an arithmetic number, because the mean of its divisors is an integer number (17506188).

Almost surely, 2^1325765280 is an apocalyptic number.

1325765280 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 1325765280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520891072).

1325765280 is an abundant number, since it is smaller than the sum of its proper divisors (3716016864).

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

1325765280 is a wasteful number, since it uses less digits than its factorization.

1325765280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 1325765280 is about 36411.0598582354. The cubic root of 1325765280 is about 1098.5560337144.

The spelling of 1325765280 in words is "one billion, three hundred twenty-five million, seven hundred sixty-five thousand, two hundred eighty".