20132225 has 6 divisors (see below), whose sum is σ = 24963990. Its totient is φ = 16105760.

The previous prime is 20132219. The next prime is 20132243. The reversal of 20132225 is 52223102.

It can be written as a sum of positive squares in 3 ways, for example, as 4036081 + 16096144 = 2009^2 + 4012^2 .

It is not a de Polignac number, because 20132225 - 2¹⁶ = 20066689 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, 402620 + ... + 402669.

It is an arithmetic number, because the mean of its divisors is an integer number (4160665).

Almost surely, 2^20132225 is an apocalyptic number.

20132225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20132225 is a deficient number, since it is larger than the sum of its proper divisors (4831765).

20132225 is an equidigital number, since it uses as much as digits as its factorization.

20132225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805299 (or 805294 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20132225 is about 4486.8948059878. The cubic root of 20132225 is about 272.0386380016.

Adding to 20132225 its reverse (52223102), we get a palindrome (72355327).

The spelling of 20132225 in words is "twenty million, one hundred thirty-two thousand, two hundred twenty-five".