225618752 has 14 divisors (see below), whose sum is σ = 447712338. Its totient is φ = 112809344.

The previous prime is 225618751. The next prime is 225618761. The reversal of 225618752 is 257816522.

It can be written as a sum of positive squares in only one way, i.e., 197571136 + 28047616 = 14056^2 + 5296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225618751) 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 as a sum of consecutive naturals, namely, 1762583 + ... + 1762710.

Almost surely, 2^225618752 is an apocalyptic number.

It is an amenable number.

225618752 is a deficient number, since it is larger than the sum of its proper divisors (222093586).

225618752 is an equidigital number, since it uses as much as digits as its factorization.

225618752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525305 (or 3525295 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 225618752 is about 15020.6109063513. The cubic root of 225618752 is about 608.7772262446. Note that the first 3 decimals are identical.

It can be divided in two parts, 22561 and 8752, that added together give a palindrome (31313).

The spelling of 225618752 in words is "two hundred twenty-five million, six hundred eighteen thousand, seven hundred fifty-two".