225214405 has 16 divisors (see below), whose sum is σ = 291385584. Its totient is φ = 166118400.

The previous prime is 225214397. The next prime is 225214433. The reversal of 225214405 is 504412522.

It can be written as a sum of positive squares in 8 ways, for example, as 3621409 + 221592996 = 1903^2 + 14886^2 .

It is not a de Polignac number, because 225214405 - 2³ = 225214397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225214405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79005 + ... + 81805.

It is an arithmetic number, because the mean of its divisors is an integer number (18211599).

Almost surely, 2^225214405 is an apocalyptic number.

It is an amenable number.

225214405 is a deficient number, since it is larger than the sum of its proper divisors (66171179).

225214405 is a wasteful number, since it uses less digits than its factorization.

225214405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 225214405 is about 15007.1451315698. The cubic root of 225214405 is about 608.4133314865.

Adding to 225214405 its reverse (504412522), we get a palindrome (729626927).

The spelling of 225214405 in words is "two hundred twenty-five million, two hundred fourteen thousand, four hundred five".