216035353225 has 6 divisors (see below), whose sum is σ = 267883838030. Its totient is φ = 172828282560.

The previous prime is 216035353211. The next prime is 216035353243. The reversal of 216035353225 is 522353530612.

It can be written as a sum of positive squares in 3 ways, for example, as 8925714576 + 207109638649 = 94476^2 + 455093^2 .

It is not a de Polignac number, because 216035353225 - 2¹⁷ = 216035222153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4320707040 + ... + 4320707089.

Almost surely, 2^216035353225 is an apocalyptic number.

216035353225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216035353225 is a deficient number, since it is larger than the sum of its proper divisors (51848484805).

216035353225 is an equidigital number, since it uses as much as digits as its factorization.

216035353225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641414139 (or 8641414134 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 216035353225 its reverse (522353530612), we get a palindrome (738388883837).

The spelling of 216035353225 in words is "two hundred sixteen billion, thirty-five million, three hundred fifty-three thousand, two hundred twenty-five".