225516237 has 12 divisors (see below), whose sum is σ = 319417536. Its totient is φ = 141499840.

The previous prime is 225516217. The next prime is 225516251. The reversal of 225516237 is 732615522.

It is not a de Polignac number, because 225516237 - 2¹² = 225512141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225516198 and 225516207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225516217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129189 + ... + 130922.

It is an arithmetic number, because the mean of its divisors is an integer number (26618128).

Almost surely, 2^225516237 is an apocalyptic number.

It is an amenable number.

225516237 is a deficient number, since it is larger than the sum of its proper divisors (93901299).

225516237 is a wasteful number, since it uses less digits than its factorization.

225516237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260148 (or 260131 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 225516237 is about 15017.1980409130. The cubic root of 225516237 is about 608.6850083601.

The spelling of 225516237 in words is "two hundred twenty-five million, five hundred sixteen thousand, two hundred thirty-seven".