225020445 has 32 divisors (see below), whose sum is σ = 390604032. Its totient is φ = 109957632.

The previous prime is 225020429. The next prime is 225020447. The reversal of 225020445 is 544020522.

It is a happy number.

225020445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 225020445 - 2⁴ = 225020429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225020447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22504 + ... + 30926.

It is an arithmetic number, because the mean of its divisors is an integer number (12206376).

Almost surely, 2^225020445 is an apocalyptic number.

It is an amenable number.

225020445 is a deficient number, since it is larger than the sum of its proper divisors (165583587).

225020445 is a wasteful number, since it uses less digits than its factorization.

225020445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8581.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 225020445 is about 15000.6814845193. The cubic root of 225020445 is about 608.2386213134.

Adding to 225020445 its reverse (544020522), we get a palindrome (769040967).

The spelling of 225020445 in words is "two hundred twenty-five million, twenty thousand, four hundred forty-five".