225430025 has 6 divisors (see below), whose sum is σ = 279533262. Its totient is φ = 180344000.

The previous prime is 225429991. The next prime is 225430027. The reversal of 225430025 is 520034522.

It can be written as a sum of positive squares in 3 ways, for example, as 14047504 + 211382521 = 3748^2 + 14539^2 .

It is a de Polignac number, because none of the positive numbers 2^k-225430025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225430027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4508576 + ... + 4508625.

It is an arithmetic number, because the mean of its divisors is an integer number (46588877).

Almost surely, 2^225430025 is an apocalyptic number.

225430025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225430025 is a deficient number, since it is larger than the sum of its proper divisors (54103237).

225430025 is an equidigital number, since it uses as much as digits as its factorization.

225430025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017211 (or 9017206 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 225430025 is about 15014.3273242593. The cubic root of 225430025 is about 608.6074342853.

Adding to 225430025 its reverse (520034522), we get a palindrome (745464547).

The spelling of 225430025 in words is "two hundred twenty-five million, four hundred thirty thousand, twenty-five".