32224525 has 6 divisors (see below), whose sum is σ = 39958442. Its totient is φ = 25779600.

The previous prime is 32224519. The next prime is 32224529. The reversal of 32224525 is 52542223.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10125124 + 22099401 = 3182^2 + 4701^2 .

It is a de Polignac number, because none of the positive numbers 2^k-32224525 is a prime.

It is a super-2 number, since 2×32224525² = 2076840022951250, which contains 22 as substring.

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: 1288981 = 32224525 / (3 + 2 + 2 + 2 + 4 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32224525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32224529) 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, 644466 + ... + 644515.

Almost surely, 2^32224525 is an apocalyptic number.

It is an amenable number.

32224525 is a deficient number, since it is larger than the sum of its proper divisors (7733917).

32224525 is a wasteful number, since it uses less digits than its factorization.

32224525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288991 (or 1288986 counting only the distinct ones).

The product of its digits is 4800, while the sum is 25.

The square root of 32224525 is about 5676.6649540025. The cubic root of 32224525 is about 318.2210038937.

Adding to 32224525 its reverse (52542223), we get a palindrome (84766748).

The spelling of 32224525 in words is "thirty-two million, two hundred twenty-four thousand, five hundred twenty-five".