225939237 has 16 divisors (see below), whose sum is σ = 304869312. Its totient is φ = 148828160.

The previous prime is 225939193. The next prime is 225939239. The reversal of 225939237 is 732939522.

It is a cyclic number.

It is not a de Polignac number, because 225939237 - 2⁶ = 225939173 is a prime.

It is a super-2 number, since 2×225939237² = 102097077632284338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225939239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99883 + ... + 102119.

It is an arithmetic number, because the mean of its divisors is an integer number (19054332).

Almost surely, 2^225939237 is an apocalyptic number.

It is an amenable number.

225939237 is a deficient number, since it is larger than the sum of its proper divisors (78930075).

225939237 is a wasteful number, since it uses less digits than its factorization.

225939237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

The product of its digits is 204120, while the sum is 42.

The square root of 225939237 is about 15031.2752951970. The cubic root of 225939237 is about 609.0653400953.

The spelling of 225939237 in words is "two hundred twenty-five million, nine hundred thirty-nine thousand, two hundred thirty-seven".