33161225 has 6 divisors (see below), whose sum is σ = 41119950. Its totient is φ = 26528960.

The previous prime is 33161201. The next prime is 33161231. The reversal of 33161225 is 52216133.

It can be written as a sum of positive squares in 3 ways, for example, as 110224 + 33051001 = 332^2 + 5749^2 .

It is not a de Polignac number, because 33161225 - 2¹⁰ = 33160201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33161225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663200 + ... + 663249.

It is an arithmetic number, because the mean of its divisors is an integer number (6853325).

Almost surely, 2^33161225 is an apocalyptic number.

It is an amenable number.

33161225 is a deficient number, since it is larger than the sum of its proper divisors (7958725).

33161225 is a wasteful number, since it uses less digits than its factorization.

33161225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326459 (or 1326454 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 33161225 is about 5758.5783835943. The cubic root of 33161225 is about 321.2749429275.

Adding to 33161225 its reverse (52216133), we get a palindrome (85377358).

The spelling of 33161225 in words is "thirty-three million, one hundred sixty-one thousand, two hundred twenty-five".