225415013 has 2 divisors, whose sum is σ = 225415014. Its totient is φ = 225415012.

The previous prime is 225415009. The next prime is 225415039. The reversal of 225415013 is 310514522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219573124 + 5841889 = 14818^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 225415013 - 2² = 225415009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225415013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225415093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112707506 + 112707507.

It is an arithmetic number, because the mean of its divisors is an integer number (112707507).

Almost surely, 2^225415013 is an apocalyptic number.

It is an amenable number.

225415013 is a deficient number, since it is larger than the sum of its proper divisors (1).

225415013 is an equidigital number, since it uses as much as digits as its factorization.

225415013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 225415013 is about 15013.8273934397. The cubic root of 225415013 is about 608.5939243759.

Adding to 225415013 its reverse (310514522), we get a palindrome (535929535).

The spelling of 225415013 in words is "two hundred twenty-five million, four hundred fifteen thousand, thirteen".