215352325 has 6 divisors (see below), whose sum is σ = 267036914. Its totient is φ = 172281840.

The previous prime is 215352317. The next prime is 215352329. The reversal of 215352325 is 523253512.

It can be written as a sum of positive squares in 3 ways, for example, as 20666116 + 194686209 = 4546^2 + 13953^2 .

It is not a de Polignac number, because 215352325 - 2³ = 215352317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215352293 and 215352302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215352329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4307022 + ... + 4307071.

Almost surely, 2^215352325 is an apocalyptic number.

215352325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

215352325 is a deficient number, since it is larger than the sum of its proper divisors (51684589).

215352325 is an equidigital number, since it uses as much as digits as its factorization.

215352325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614103 (or 8614098 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 215352325 is about 14674.8875634534. The cubic root of 215352325 is about 599.3997005271.

The spelling of 215352325 in words is "two hundred fifteen million, three hundred fifty-two thousand, three hundred twenty-five".