1325400326406 has 64 divisors (see below), whose sum is σ = 3172343778240. Its totient is φ = 407758199040.

The previous prime is 1325400326387. The next prime is 1325400326407. The reversal of 1325400326406 is 6046230045231.

1325400326406 is a `hidden beast` number, since 1 + 3 + 2 + 5 + 4 + 0 + 0 + 3 + 2 + 640 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325400326407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5010396 + ... + 5268288.

It is an arithmetic number, because the mean of its divisors is an integer number (49567871535).

Almost surely, 2^{1325400326406} is an apocalyptic number.

1325400326406 is an abundant number, since it is smaller than the sum of its proper divisors (1846943451834).

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

1325400326406 is a wasteful number, since it uses less digits than its factorization.

1325400326406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265238 (or 265232 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 1325400326406 in words is "one trillion, three hundred twenty-five billion, four hundred million, three hundred twenty-six thousand, four hundred six".