72425228 has 12 divisors (see below), whose sum is σ = 127504272. Its totient is φ = 35995440.

The previous prime is 72425153. The next prime is 72425237. The reversal of 72425228 is 82252427.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 72425194 and 72425203.

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 3 ways as a sum of consecutive naturals, for example, 53543 + ... + 54878.

It is an arithmetic number, because the mean of its divisors is an integer number (10625356).

Almost surely, 2^72425228 is an apocalyptic number.

It is an amenable number.

72425228 is a deficient number, since it is larger than the sum of its proper divisors (55079044).

72425228 is a wasteful number, since it uses less digits than its factorization.

72425228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108592 (or 108590 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 72425228 is about 8510.3012872636. The cubic root of 72425228 is about 416.8341482086.

It can be divided in two parts, 724 and 25228, that added together give a palindrome (25952).

The spelling of 72425228 in words is "seventy-two million, four hundred twenty-five thousand, two hundred twenty-eight".