225312025 has 12 divisors (see below), whose sum is σ = 291534912. Its totient is φ = 172412240.

The previous prime is 225312007. The next prime is 225312041. The reversal of 225312025 is 520213522.

It is not a de Polignac number, because 225312025 - 2¹⁹ = 224787737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225311987 and 225312005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195349 + ... + 196498.

It is an arithmetic number, because the mean of its divisors is an integer number (24294576).

Almost surely, 2^225312025 is an apocalyptic number.

225312025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225312025 is a deficient number, since it is larger than the sum of its proper divisors (66222887).

225312025 is a wasteful number, since it uses less digits than its factorization.

225312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391880 (or 391875 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 225312025 is about 15010.3972299203. The cubic root of 225312025 is about 608.5012251096.

Adding to 225312025 its reverse (520213522), we get a palindrome (745525547).

The spelling of 225312025 in words is "two hundred twenty-five million, three hundred twelve thousand, twenty-five".