216313359025 has 27 divisors (see below), whose sum is σ = 270329671969. Its totient is φ = 171705632480.

The previous prime is 216313359023. The next prime is 216313359043. The reversal of 216313359025 is 520953313612.

The square root of 216313359025 is 465095.

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 74371289521 + 141942069504 = 272711^2 + 376752^2 .

It is not a de Polignac number, because 216313359025 - 2¹ = 216313359023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216313359023) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 388354047 + ... + 388354603.

Almost surely, 2^216313359025 is an apocalyptic number.

216313359025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216313359025 is the 465095-th square number.

216313359025 is the 232548-th centered octagonal number.

It is an amenable number.

216313359025 is a deficient number, since it is larger than the sum of its proper divisors (54016312944).

216313359025 is an frugal number, since it uses more digits than its factorization.

216313359025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 216313359025 in words is "two hundred sixteen billion, three hundred thirteen million, three hundred fifty-nine thousand, twenty-five".