33225331 has 2 divisors, whose sum is σ = 33225332. Its totient is φ = 33225330.

The previous prime is 33225323. The next prime is 33225347. The reversal of 33225331 is 13352233.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13352233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33225331 - 2³ = 33225323 is a prime.

It is a super-2 number, since 2×33225331² = 2207845240119122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33225301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16612665 + 16612666.

It is an arithmetic number, because the mean of its divisors is an integer number (16612666).

Almost surely, 2^33225331 is an apocalyptic number.

33225331 is a deficient number, since it is larger than the sum of its proper divisors (1).

33225331 is an equidigital number, since it uses as much as digits as its factorization.

33225331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 22.

The square root of 33225331 is about 5764.1418268464. The cubic root of 33225331 is about 321.4818351050.

Adding to 33225331 its reverse (13352233), we get a palindrome (46577564).

The spelling of 33225331 in words is "thirty-three million, two hundred twenty-five thousand, three hundred thirty-one".