215305453335325 has 12 divisors (see below), whose sum is σ = 267266145116340. Its totient is φ = 172058954293760.

The previous prime is 215305453335239. The next prime is 215305453335337. The reversal of 215305453335325 is 523533354503512.

It can be written as a sum of positive squares in 6 ways, for example, as 38322500727289 + 176982952608036 = 6190517^2 + 13303494^2 .

It is not a de Polignac number, because 215305453335325 - 2¹¹ = 215305453333277 is a prime.

It is a super-2 number, since 2×215305453335325² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4635185674 + ... + 4635232123.

It is an arithmetic number, because the mean of its divisors is an integer number (22272178759695).

Almost surely, 2^{215305453335325} is an apocalyptic number.

215305453335325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215305453335325 is a deficient number, since it is larger than the sum of its proper divisors (51960691781015).

215305453335325 is an equidigital number, since it uses as much as digits as its factorization.

215305453335325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9270418736 (or 9270418731 counting only the distinct ones).

The product of its (nonzero) digits is 12150000, while the sum is 49.

The spelling of 215305453335325 in words is "two hundred fifteen trillion, three hundred five billion, four hundred fifty-three million, three hundred thirty-five thousand, three hundred twenty-five".