325587072640 has 128 divisors (see below), whose sum is σ = 825966460800. Its totient is φ = 122460721152.

The previous prime is 325587072611. The next prime is 325587072659. The reversal of 325587072640 is 46270785523.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681034 + ... + 1055926.

It is an arithmetic number, because the mean of its divisors is an integer number (6452862975).

Almost surely, 2^325587072640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 325587072640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412983230400).

325587072640 is an abundant number, since it is smaller than the sum of its proper divisors (500379388160).

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

325587072640 is a wasteful number, since it uses less digits than its factorization.

325587072640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374994 (or 374982 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 325587072640 in words is "three hundred twenty-five billion, five hundred eighty-seven million, seventy-two thousand, six hundred forty".