328705875625 has 10 divisors (see below), whose sum is σ = 410750862962. Its totient is φ = 262964700000.

The previous prime is 328705875601. The next prime is 328705875629. The reversal of 328705875625 is 526578507823.

It can be written as a sum of positive squares in 5 ways, for example, as 60265831081 + 268440044544 = 245491^2 + 518112^2 .

It is not a de Polignac number, because 328705875625 - 2¹³ = 328705867433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328705875625.

It is not an unprimeable number, because it can be changed into a prime (328705875629) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 262964076 + ... + 262965325.

Almost surely, 2^328705875625 is an apocalyptic number.

It is an amenable number.

328705875625 is a deficient number, since it is larger than the sum of its proper divisors (82044987337).

328705875625 is an frugal number, since it uses more digits than its factorization.

328705875625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525929421 (or 525929406 counting only the distinct ones).

The product of its (nonzero) digits is 28224000, while the sum is 58.

The spelling of 328705875625 in words is "three hundred twenty-eight billion, seven hundred five million, eight hundred seventy-five thousand, six hundred twenty-five".