225972427 has 8 divisors (see below), whose sum is σ = 227846736. Its totient is φ = 224104992.

The previous prime is 225972413. The next prime is 225972503. The reversal of 225972427 is 724279522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225972427 is a prime.

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 225972427.

It is not an unprimeable number, because it can be changed into a prime (225972407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79393 + ... + 82189.

It is an arithmetic number, because the mean of its divisors is an integer number (28480842).

Almost surely, 2^225972427 is an apocalyptic number.

225972427 is a deficient number, since it is larger than the sum of its proper divisors (1874309).

225972427 is a wasteful number, since it uses less digits than its factorization.

225972427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437.

The product of its digits is 141120, while the sum is 40.

The square root of 225972427 is about 15032.3792860611. The cubic root of 225972427 is about 609.0951621087.

The spelling of 225972427 in words is "two hundred twenty-five million, nine hundred seventy-two thousand, four hundred twenty-seven".