1323256725489 has 8 divisors (see below), whose sum is σ = 1774907225280. Its totient is φ = 876888688016.

The previous prime is 1323256725457. The next prime is 1323256725491. The reversal of 1323256725489 is 9845276523231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1323256725489 - 2⁵ = 1323256725457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323256725289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320614994 + ... + 1320615995.

It is an arithmetic number, because the mean of its divisors is an integer number (221863403160).

Almost surely, 2^{1323256725489} is an apocalyptic number.

It is an amenable number.

1323256725489 is a deficient number, since it is larger than the sum of its proper divisors (451650499791).

1323256725489 is a wasteful number, since it uses less digits than its factorization.

1323256725489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641231159.

The product of its digits is 21772800, while the sum is 57.

The spelling of 1323256725489 in words is "one trillion, three hundred twenty-three billion, two hundred fifty-six million, seven hundred twenty-five thousand, four hundred eighty-nine".