225015125 has 8 divisors (see below), whose sum is σ = 280819032. Its totient is φ = 180012000.

The previous prime is 225015121. The next prime is 225015169. The reversal of 225015125 is 521510522.

It can be written as a sum of positive squares in 4 ways, for example, as 6507601 + 218507524 = 2551^2 + 14782^2 .

It is not a de Polignac number, because 225015125 - 2² = 225015121 is a prime.

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 225015125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225015121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899936 + ... + 900185.

It is an arithmetic number, because the mean of its divisors is an integer number (35102379).

Almost surely, 2^225015125 is an apocalyptic number.

225015125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

225015125 is a deficient number, since it is larger than the sum of its proper divisors (55803907).

225015125 is an equidigital number, since it uses as much as digits as its factorization.

225015125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800136 (or 1800126 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 225015125 is about 15000.5041581942. The cubic root of 225015125 is about 608.2338278898.

Adding to 225015125 its reverse (521510522), we get a palindrome (746525647).

The spelling of 225015125 in words is "two hundred twenty-five million, fifteen thousand, one hundred twenty-five".