225684037 has 2 divisors, whose sum is σ = 225684038. Its totient is φ = 225684036.

The previous prime is 225684007. The next prime is 225684059. The reversal of 225684037 is 730486522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199120321 + 26563716 = 14111^2 + 5154^2 .

It is a cyclic number.

It is not a de Polignac number, because 225684037 - 2¹⁵ = 225651269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225683987 and 225684005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225684007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112842018 + 112842019.

It is an arithmetic number, because the mean of its divisors is an integer number (112842019).

Almost surely, 2^225684037 is an apocalyptic number.

It is an amenable number.

225684037 is a deficient number, since it is larger than the sum of its proper divisors (1).

225684037 is an equidigital number, since it uses as much as digits as its factorization.

225684037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 225684037 is about 15022.7839297515. The cubic root of 225684037 is about 608.8359391368.

The spelling of 225684037 in words is "two hundred twenty-five million, six hundred eighty-four thousand, thirty-seven".