328678623025 has 9 divisors (see below), whose sum is σ = 407565047073. Its totient is φ = 262940605200.

The previous prime is 328678623023. The next prime is 328678623041. The reversal of 328678623025 is 520326876823.

The square root of 328678623025 is 573305.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 18803814129 + 309874808896 = 137127^2 + 556664^2 .

It is not a de Polignac number, because 328678623025 - 2¹ = 328678623023 is a prime.

It is a super-2 number, since 2×328678623025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328678623023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2809195 + ... + 2923855.

Almost surely, 2^328678623025 is an apocalyptic number.

328678623025 is the 573305-th square number.

328678623025 is the 286653-rd centered octagonal number.

It is an amenable number.

328678623025 is a deficient number, since it is larger than the sum of its proper divisors (78886424048).

328678623025 is an frugal number, since it uses more digits than its factorization.

328678623025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229332 (or 114666 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 328678623025 in words is "three hundred twenty-eight billion, six hundred seventy-eight million, six hundred twenty-three thousand, twenty-five".