225404125 has 16 divisors (see below), whose sum is σ = 296112960. Its totient is φ = 170830800.

The previous prime is 225404119. The next prime is 225404129. The reversal of 225404125 is 521404522.

It is not a de Polignac number, because 225404125 - 2⁹ = 225403613 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 225404125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225404129) 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, 45079 + ... + 49828.

It is an arithmetic number, because the mean of its divisors is an integer number (18507060).

Almost surely, 2^225404125 is an apocalyptic number.

225404125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225404125 is a deficient number, since it is larger than the sum of its proper divisors (70708835).

225404125 is an equidigital number, since it uses as much as digits as its factorization.

225404125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94941 (or 94931 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 225404125 is about 15013.4647899810. The cubic root of 225404125 is about 608.5841254466.

Adding to 225404125 its reverse (521404522), we get a palindrome (746808647).

The spelling of 225404125 in words is "two hundred twenty-five million, four hundred four thousand, one hundred twenty-five".