225931236 has 48 divisors (see below), whose sum is σ = 540743616. Its totient is φ = 73396224.

The previous prime is 225931219. The next prime is 225931273. The reversal of 225931236 is 632139522.

It is a junction number, because it is equal to n+sod(n) for n = 225931197 and 225931206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76540 + ... + 79436.

It is an arithmetic number, because the mean of its divisors is an integer number (11265492).

Almost surely, 2^225931236 is an apocalyptic number.

It is an amenable number.

225931236 is an abundant number, since it is smaller than the sum of its proper divisors (314812380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225931236 is a wasteful number, since it uses less digits than its factorization.

225931236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068 (or 3066 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 225931236 is about 15031.0091477585. The cubic root of 225931236 is about 609.0581505675.

The spelling of 225931236 in words is "two hundred twenty-five million, nine hundred thirty-one thousand, two hundred thirty-six".