1325849889280 has 320 divisors, whose sum is σ = 3990576015360. Its totient is φ = 411925561344.

The previous prime is 1325849889253. The next prime is 1325849889281. The reversal of 1325849889280 is 829889485231.

It is a tau number, because it is divible by the number of its divisors (320).

It is not an unprimeable number, because it can be changed into a prime (1325849889281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7746387 + ... + 7915693.

It is an arithmetic number, because the mean of its divisors is an integer number (12470550048).

Almost surely, 2^{1325849889280} is an apocalyptic number.

1325849889280 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 1325849889280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995288007680).

1325849889280 is an abundant number, since it is smaller than the sum of its proper divisors (2664726126080).

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

1325849889280 is a wasteful number, since it uses less digits than its factorization.

1325849889280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169379 (or 169363 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 67.

The spelling of 1325849889280 in words is "one trillion, three hundred twenty-five billion, eight hundred forty-nine million, eight hundred eighty-nine thousand, two hundred eighty".