325143055440 has 360 divisors, whose sum is σ = 1273221151488. Its totient is φ = 74142512640.

The previous prime is 325143055417. The next prime is 325143055459. The reversal of 325143055440 is 44550341523.

325143055440 is a `hidden beast` number, since 3 + 25 + 1 + 43 + 0 + 554 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 325143055395 and 325143055404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15194989 + ... + 15216371.

Almost surely, 2^325143055440 is an apocalyptic number.

325143055440 is a gapful number since it is divisible by the number (30) 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 325143055440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636610575744).

325143055440 is an abundant number, since it is smaller than the sum of its proper divisors (948078096048).

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

325143055440 is a wasteful number, since it uses less digits than its factorization.

325143055440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21847 (or 21831 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 325143055440 its reverse (44550341523), we get a palindrome (369693396963).

The spelling of 325143055440 in words is "three hundred twenty-five billion, one hundred forty-three million, fifty-five thousand, four hundred forty".