225440253 has 10 divisors (see below), whose sum is σ = 336768894. Its totient is φ = 150293448.

The previous prime is 225440251. The next prime is 225440261. The reversal of 225440253 is 352044522.

It is a happy number.

225440253 is a `hidden beast` number, since 2 + 254 + 402 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 150479289 + 74960964 = 12267^2 + 8658^2 .

It is not a de Polignac number, because 225440253 - 2¹ = 225440251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225440251) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1391526 + ... + 1391687.

Almost surely, 2^225440253 is an apocalyptic number.

It is an amenable number.

225440253 is a deficient number, since it is larger than the sum of its proper divisors (111328641).

225440253 is an equidigital number, since it uses as much as digits as its factorization.

225440253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783225 (or 2783216 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 225440253 is about 15014.6679283959. The cubic root of 225440253 is about 608.6166385349.

Adding to 225440253 its reverse (352044522), we get a palindrome (577484775).

The spelling of 225440253 in words is "two hundred twenty-five million, four hundred forty thousand, two hundred fifty-three".