1325748812256 has 144 divisors (see below), whose sum is σ = 4129902464688. Its totient is φ = 400074854400.

The previous prime is 1325748812243. The next prime is 1325748812281. The reversal of 1325748812256 is 6522188475231.

It is a happy number.

1325748812256 is a `hidden beast` number, since 1 + 3 + 2 + 574 + 8 + 8 + 12 + 2 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104731 + ... + 1631706.

It is an arithmetic number, because the mean of its divisors is an integer number (28679878227).

Almost surely, 2^{1325748812256} is an apocalyptic number.

1325748812256 is a gapful number since it is divisible by the number (16) 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 1325748812256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064951232344).

1325748812256 is an abundant number, since it is smaller than the sum of its proper divisors (2804153652432).

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

1325748812256 is a wasteful number, since it uses less digits than its factorization.

1325748812256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736705 (or 1736694 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The spelling of 1325748812256 in words is "one trillion, three hundred twenty-five billion, seven hundred forty-eight million, eight hundred twelve thousand, two hundred fifty-six".