225844957 has 4 divisors (see below), whose sum is σ = 243217660. Its totient is φ = 208472256.

The previous prime is 225844939. The next prime is 225844961. The reversal of 225844957 is 759448522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119115396 + 106729561 = 10914^2 + 10331^2 .

It is a cyclic number.

It is not a de Polignac number, because 225844957 - 2¹⁵ = 225812189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225844967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8686332 + ... + 8686357.

It is an arithmetic number, because the mean of its divisors is an integer number (60804415).

Almost surely, 2^225844957 is an apocalyptic number.

225844957 is the 8677-th hex number.

It is an amenable number.

225844957 is a deficient number, since it is larger than the sum of its proper divisors (17372703).

225844957 is a wasteful number, since it uses less digits than its factorization.

225844957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17372702.

The product of its digits is 806400, while the sum is 46.

The square root of 225844957 is about 15028.1388401891. The cubic root of 225844957 is about 608.9806113131.

It can be divided in two parts, 225844 and 957, that added together give a triangular number (226801 = T₆₇₃).

The spelling of 225844957 in words is "two hundred twenty-five million, eight hundred forty-four thousand, nine hundred fifty-seven".