33225431 has 8 divisors (see below), whose sum is σ = 33770880. Its totient is φ = 32684472.

The previous prime is 33225427. The next prime is 33225461. The reversal of 33225431 is 13452233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33225431 - 2² = 33225427 is a prime.

It is a super-2 number, since 2×33225431² = 2207858530271522, 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 = 33225397 and 33225406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33225421) 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 7 ways as a sum of consecutive naturals, for example, 15800 + ... + 17778.

It is an arithmetic number, because the mean of its divisors is an integer number (4221360).

Almost surely, 2^33225431 is an apocalyptic number.

33225431 is a deficient number, since it is larger than the sum of its proper divisors (545449).

33225431 is a wasteful number, since it uses less digits than its factorization.

33225431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245.

The product of its digits is 2160, while the sum is 23.

The square root of 33225431 is about 5764.1505011580. The cubic root of 33225431 is about 321.4821576316.

Adding to 33225431 its reverse (13452233), we get a palindrome (46677664).

The spelling of 33225431 in words is "thirty-three million, two hundred twenty-five thousand, four hundred thirty-one".