27220050225 has 81 divisors (see below), whose sum is σ = 51870895297. Its totient is φ = 13642279680.

The previous prime is 27220050217. The next prime is 27220050241. The reversal of 27220050225 is 52205002272.

The square root of 27220050225 is 164985.

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 636704289 + 26583345936 = 25233^2 + 163044^2 .

It is not a de Polignac number, because 27220050225 - 2³ = 27220050217 is a prime.

It is a super-2 number, since 2×27220050225² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 42070852 + ... + 42071498.

Almost surely, 2^27220050225 is an apocalyptic number.

27220050225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27220050225 is the 164985-th square number.

27220050225 is the 82493-rd centered octagonal number.

It is an amenable number.

27220050225 is a deficient number, since it is larger than the sum of its proper divisors (24650845072).

27220050225 is an equidigital number, since it uses as much as digits as its factorization.

27220050225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

Adding to 27220050225 its reverse (52205002272), we get a palindrome (79425052497).

The spelling of 27220050225 in words is "twenty-seven billion, two hundred twenty million, fifty thousand, two hundred twenty-five".