225400125 has 16 divisors (see below), whose sum is σ = 375066432. Its totient is φ = 120213200.

The previous prime is 225400121. The next prime is 225400139. The reversal of 225400125 is 521004522.

It is a happy number.

It is not a de Polignac number, because 225400125 - 2² = 225400121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225400121) 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, 300159 + ... + 300908.

It is an arithmetic number, because the mean of its divisors is an integer number (23441652).

Almost surely, 2^225400125 is an apocalyptic number.

225400125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225400125 is a deficient number, since it is larger than the sum of its proper divisors (149666307).

225400125 is an equidigital number, since it uses as much as digits as its factorization.

225400125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601085 (or 601075 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 225400125 is about 15013.3315756364. The cubic root of 225400125 is about 608.5805254668.

Adding to 225400125 its reverse (521004522), we get a palindrome (746404647).

The spelling of 225400125 in words is "two hundred twenty-five million, four hundred thousand, one hundred twenty-five".