225425231 has 8 divisors (see below), whose sum is σ = 235392000. Its totient is φ = 215472312.

The previous prime is 225425203. The next prime is 225425279. The reversal of 225425231 is 132524522.

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

It is a cyclic number.

It is not a de Polignac number, because 225425231 - 2¹⁰ = 225424207 is a prime.

It is a super-2 number, since 2×225425231² = 101633069542806722, which contains 22 as substring.

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 225425231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225425281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43526 + ... + 48428.

It is an arithmetic number, because the mean of its divisors is an integer number (29424000).

Almost surely, 2^225425231 is an apocalyptic number.

225425231 is a deficient number, since it is larger than the sum of its proper divisors (9966769).

225425231 is a wasteful number, since it uses less digits than its factorization.

225425231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6925.

The product of its digits is 4800, while the sum is 26.

The square root of 225425231 is about 15014.1676758987. The cubic root of 225425231 is about 608.6031200349.

Adding to 225425231 its reverse (132524522), we get a palindrome (357949753).

The spelling of 225425231 in words is "two hundred twenty-five million, four hundred twenty-five thousand, two hundred thirty-one".