33025231 has 4 divisors (see below), whose sum is σ = 33277464. Its totient is φ = 32773000.

The previous prime is 33025219. The next prime is 33025241. The reversal of 33025231 is 13252033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13252033 = 227 ⋅58379.

It is a cyclic number.

It is not a de Polignac number, because 33025231 - 2⁷ = 33025103 is a prime.

It is a super-2 number, since 2×33025231² = 2181331765206722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33025199 and 33025208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33025241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125920 + ... + 126181.

It is an arithmetic number, because the mean of its divisors is an integer number (8319366).

Almost surely, 2^33025231 is an apocalyptic number.

33025231 is a deficient number, since it is larger than the sum of its proper divisors (252233).

33025231 is a wasteful number, since it uses less digits than its factorization.

33025231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252232.

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

The square root of 33025231 is about 5746.7583036004. The cubic root of 33025231 is about 320.8351589409.

Adding to 33025231 its reverse (13252033), we get a palindrome (46277264).

The spelling of 33025231 in words is "thirty-three million, twenty-five thousand, two hundred thirty-one".