1325781475200 has 3456 divisors, whose sum is σ = 6530598756000. Its totient is φ = 260855562240.

The previous prime is 1325781475189. The next prime is 1325781475211. The reversal of 1325781475200 is 25741875231.

1325781475200 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 7 + 81 + 47 + 520 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1325781475189) and next prime (1325781475211).

It is a tau number, because it is divible by the number of its divisors (3456).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 431 ways as a sum of consecutive naturals, for example, 12163132746 + ... + 12163132854.

Almost surely, 2^{1325781475200} is an apocalyptic number.

1325781475200 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 1325781475200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3265299378000).

1325781475200 is an abundant number, since it is smaller than the sum of its proper divisors (5204817280800).

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

1325781475200 is a wasteful number, since it uses less digits than its factorization.

1325781475200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 1325781475200 in words is "one trillion, three hundred twenty-five billion, seven hundred eighty-one million, four hundred seventy-five thousand, two hundred".