225413125 has 40 divisors (see below), whose sum is σ = 327145280. Its totient is φ = 152064000.

The previous prime is 225413107. The next prime is 225413129. The reversal of 225413125 is 521314522.

It is a de Polignac number, because none of the positive numbers 2^k-225413125 is a prime.

It is a super-2 number, since 2×225413125² = 101622153844531250, which contains 22 as substring.

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 225413125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225413129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 292741 + ... + 293509.

It is an arithmetic number, because the mean of its divisors is an integer number (8178632).

Almost surely, 2^225413125 is an apocalyptic number.

225413125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225413125 is a deficient number, since it is larger than the sum of its proper divisors (101732155).

225413125 is an frugal number, since it uses more digits than its factorization.

225413125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 848 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 225413125 is about 15013.7645179349. The cubic root of 225413125 is about 608.5922252455.

Adding to 225413125 its reverse (521314522), we get a palindrome (746727647).

The spelling of 225413125 in words is "two hundred twenty-five million, four hundred thirteen thousand, one hundred twenty-five".