20133325 has 6 divisors (see below), whose sum is σ = 24965354. Its totient is φ = 16106640.

The previous prime is 20133301. The next prime is 20133329. The reversal of 20133325 is 52333102.

It can be written as a sum of positive squares in 3 ways, for example, as 2316484 + 17816841 = 1522^2 + 4221^2 .

It is not a de Polignac number, because 20133325 - 2⁹ = 20132813 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133329) 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, 402642 + ... + 402691.

Almost surely, 2^20133325 is an apocalyptic number.

20133325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20133325 is a deficient number, since it is larger than the sum of its proper divisors (4832029).

20133325 is an equidigital number, since it uses as much as digits as its factorization.

20133325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805343 (or 805338 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20133325 is about 4487.0173835188. The cubic root of 20133325 is about 272.0435925302.

Adding to 20133325 its reverse (52333102), we get a palindrome (72466427).

The spelling of 20133325 in words is "twenty million, one hundred thirty-three thousand, three hundred twenty-five".