1325720720280 has 64 divisors (see below), whose sum is σ = 4338722361600. Its totient is φ = 321386840960.

The previous prime is 1325720720273. The next prime is 1325720720293. The reversal of 1325720720280 is 820270275231.

It is a congruent number.

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, 502165620 + ... + 502168259.

It is an arithmetic number, because the mean of its divisors is an integer number (67792536900).

Almost surely, 2^{1325720720280} is an apocalyptic number.

1325720720280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1325720720280 is an abundant number, since it is smaller than the sum of its proper divisors (3013001641320).

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

1325720720280 is a wasteful number, since it uses less digits than its factorization.

1325720720280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004333904 (or 1004333900 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 1325720720280 in words is "one trillion, three hundred twenty-five billion, seven hundred twenty million, seven hundred twenty thousand, two hundred eighty".