20033225 has 12 divisors (see below), whose sum is σ = 26303004. Its totient is φ = 15083520.

The previous prime is 20033213. The next prime is 20033231. The reversal of 20033225 is 52233002.

It can be written as a sum of positive squares in 6 ways, for example, as 2627641 + 17405584 = 1621^2 + 4172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20033225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23144 + ... + 23993.

It is an arithmetic number, because the mean of its divisors is an integer number (2191917).

Almost surely, 2^20033225 is an apocalyptic number.

20033225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20033225 is a deficient number, since it is larger than the sum of its proper divisors (6269779).

20033225 is a wasteful number, since it uses less digits than its factorization.

20033225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47164 (or 47159 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20033225 is about 4475.8490814593. The cubic root of 20033225 is about 271.5919893771.

Adding to 20033225 its reverse (52233002), we get a palindrome (72266227).

The spelling of 20033225 in words is "twenty million, thirty-three thousand, two hundred twenty-five".