32281225 has 6 divisors (see below), whose sum is σ = 40028750. Its totient is φ = 25824960.

The previous prime is 32281219. The next prime is 32281229. The reversal of 32281225 is 52218223.

It can be written as a sum of positive squares in 3 ways, for example, as 606841 + 31674384 = 779^2 + 5628^2 .

It is not a de Polignac number, because 32281225 - 2⁷ = 32281097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1291249 = 32281225 / (3 + 2 + 2 + 8 + 1 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 32281225.

It is not an unprimeable number, because it can be changed into a prime (32281229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645600 + ... + 645649.

Almost surely, 2^32281225 is an apocalyptic number.

It is an amenable number.

32281225 is a deficient number, since it is larger than the sum of its proper divisors (7747525).

32281225 is a wasteful number, since it uses less digits than its factorization.

32281225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291259 (or 1291254 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 32281225 is about 5681.6568886197. The cubic root of 32281225 is about 318.4075342748.

Adding to 32281225 its reverse (52218223), we get a palindrome (84499448).

The spelling of 32281225 in words is "thirty-two million, two hundred eighty-one thousand, two hundred twenty-five".