32181225 has 12 divisors (see below), whose sum is σ = 53206416. Its totient is φ = 17163280.

The previous prime is 32181223. The next prime is 32181241. The reversal of 32181225 is 52218123.

It is not a de Polignac number, because 32181225 - 2¹ = 32181223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32181195 and 32181204.

It is not an unprimeable number, because it can be changed into a prime (32181223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214467 + ... + 214616.

It is an arithmetic number, because the mean of its divisors is an integer number (4433868).

Almost surely, 2^32181225 is an apocalyptic number.

It is an amenable number.

32181225 is a deficient number, since it is larger than the sum of its proper divisors (21025191).

32181225 is a wasteful number, since it uses less digits than its factorization.

32181225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429096 (or 429091 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 32181225 is about 5672.8498129247. The cubic root of 32181225 is about 318.0784091292.

Adding to 32181225 its reverse (52218123), we get a palindrome (84399348).

The spelling of 32181225 in words is "thirty-two million, one hundred eighty-one thousand, two hundred twenty-five".