225305125 has 16 divisors (see below), whose sum is σ = 293409792. Its totient is φ = 172405200.

The previous prime is 225305123. The next prime is 225305141. The reversal of 225305125 is 521503522.

It is a happy number.

It is not a de Polignac number, because 225305125 - 2¹ = 225305123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225305125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225305123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36309 + ... + 42058.

It is an arithmetic number, because the mean of its divisors is an integer number (18338112).

Almost surely, 2^225305125 is an apocalyptic number.

225305125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225305125 is a deficient number, since it is larger than the sum of its proper divisors (68104667).

225305125 is an equidigital number, since it uses as much as digits as its factorization.

225305125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78405 (or 78395 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 225305125 is about 15010.1673874744. The cubic root of 225305125 is about 608.4950134256.

Adding to 225305125 its reverse (521503522), we get a palindrome (746808647).

The spelling of 225305125 in words is "two hundred twenty-five million, three hundred five thousand, one hundred twenty-five".