225242025 has 12 divisors (see below), whose sum is σ = 372400272. Its totient is φ = 120129040.

The previous prime is 225241981. The next prime is 225242029. The reversal of 225242025 is 520242522.

It is a happy number.

It is not a de Polignac number, because 225242025 - 2⁷ = 225241897 is a prime.

It is a super-2 number, since 2×225242025² = 101467939652201250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225241986 and 225242004.

It is not an unprimeable number, because it can be changed into a prime (225242029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1501539 + ... + 1501688.

It is an arithmetic number, because the mean of its divisors is an integer number (31033356).

Almost surely, 2^225242025 is an apocalyptic number.

225242025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225242025 is a deficient number, since it is larger than the sum of its proper divisors (147158247).

225242025 is a wasteful number, since it uses less digits than its factorization.

225242025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003240 (or 3003235 counting only the distinct ones).

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

The square root of 225242025 is about 15008.0653316808. The cubic root of 225242025 is about 608.4382021415.

Adding to 225242025 its reverse (520242522), we get a palindrome (745484547).

The spelling of 225242025 in words is "two hundred twenty-five million, two hundred forty-two thousand, twenty-five".