225710437 has 2 divisors, whose sum is σ = 225710438. Its totient is φ = 225710436.

The previous prime is 225710423. The next prime is 225710447. The reversal of 225710437 is 734017522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175456516 + 50253921 = 13246^2 + 7089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225710437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225710399 and 225710408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225710417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112855218 + 112855219.

It is an arithmetic number, because the mean of its divisors is an integer number (112855219).

Almost surely, 2^225710437 is an apocalyptic number.

It is an amenable number.

225710437 is a deficient number, since it is larger than the sum of its proper divisors (1).

225710437 is an equidigital number, since it uses as much as digits as its factorization.

225710437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 225710437 is about 15023.6625694269. The cubic root of 225710437 is about 608.8596782875.

Adding to 225710437 its reverse (734017522), we get a palindrome (959727959).

The spelling of 225710437 in words is "two hundred twenty-five million, seven hundred ten thousand, four hundred thirty-seven".