72225132 has 24 divisors (see below), whose sum is σ = 192600576. Its totient is φ = 20635728.

The previous prime is 72225113. The next prime is 72225143. The reversal of 72225132 is 23152227.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429828 + ... + 429995.

It is an arithmetic number, because the mean of its divisors is an integer number (8025024).

Almost surely, 2^72225132 is an apocalyptic number.

It is an amenable number.

72225132 is an abundant number, since it is smaller than the sum of its proper divisors (120375444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72225132 is a wasteful number, since it uses less digits than its factorization.

72225132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859837 (or 859835 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 72225132 is about 8498.5370505752. The cubic root of 72225132 is about 416.4499184859.

Adding to 72225132 its reverse (23152227), we get a palindrome (95377359).

The spelling of 72225132 in words is "seventy-two million, two hundred twenty-five thousand, one hundred thirty-two".