27243225 has 18 divisors (see below), whose sum is σ = 48796046. Its totient is φ = 14529600.

The previous prime is 27243217. The next prime is 27243233. The reversal of 27243225 is 52234272.

It is an interprime number because it is at equal distance from previous prime (27243217) and next prime (27243233).

It can be written as a sum of positive squares in 3 ways, for example, as 741321 + 26501904 = 861^2 + 5148^2 .

It is not a de Polignac number, because 27243225 - 2³ = 27243217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60316 + ... + 60765.

Almost surely, 2^27243225 is an apocalyptic number.

27243225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27243225 is a deficient number, since it is larger than the sum of its proper divisors (21552821).

27243225 is a wasteful number, since it uses less digits than its factorization.

27243225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121097 (or 121089 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 27243225 is about 5219.5042868073. The cubic root of 27243225 is about 300.8981417878.

Adding to 27243225 its reverse (52234272), we get a palindrome (79477497).

The spelling of 27243225 in words is "twenty-seven million, two hundred forty-three thousand, two hundred twenty-five".