226404225 has 18 divisors (see below), whose sum is σ = 405515526. Its totient is φ = 120748800.

The previous prime is 226404223. The next prime is 226404239. The reversal of 226404225 is 522404622.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 64834704 + 161569521 = 8052^2 + 12711^2 .

It is not a de Polignac number, because 226404225 - 2¹ = 226404223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226404223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 502896 + ... + 503345.

Almost surely, 2^226404225 is an apocalyptic number.

226404225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

226404225 is a deficient number, since it is larger than the sum of its proper divisors (179111301).

226404225 is a wasteful number, since it uses less digits than its factorization.

226404225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006257 (or 1006249 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 226404225 is about 15046.7346956075. The cubic root of 226404225 is about 609.4828771539.

Adding to 226404225 its reverse (522404622), we get a palindrome (748808847).

The spelling of 226404225 in words is "two hundred twenty-six million, four hundred four thousand, two hundred twenty-five".