328030505525 has 12 divisors (see below), whose sum is σ = 408865386372. Its totient is φ = 261064688640.

The previous prime is 328030505521. The next prime is 328030505549. The reversal of 328030505525 is 525505030823.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 74616931921 + 253413573604 = 273161^2 + 503402^2 .

It is not a de Polignac number, because 328030505525 - 2² = 328030505521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328030505521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33987974 + ... + 33997623.

It is an arithmetic number, because the mean of its divisors is an integer number (34072115531).

Almost surely, 2^328030505525 is an apocalyptic number.

It is an amenable number.

328030505525 is a deficient number, since it is larger than the sum of its proper divisors (80834880847).

328030505525 is a wasteful number, since it uses less digits than its factorization.

328030505525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67985800 (or 67985795 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 328030505525 in words is "three hundred twenty-eight billion, thirty million, five hundred five thousand, five hundred twenty-five".