225437188 has 12 divisors (see below), whose sum is σ = 404137692. Its totient is φ = 109969280.

The previous prime is 225437183. The next prime is 225437203. The reversal of 225437188 is 881734522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32171584 + 193265604 = 5672^2 + 13902^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225437188.

It is not an unprimeable number, because it can be changed into a prime (225437183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687145 + ... + 687472.

It is an arithmetic number, because the mean of its divisors is an integer number (33678141).

Almost surely, 2^225437188 is an apocalyptic number.

It is an amenable number.

225437188 is a deficient number, since it is larger than the sum of its proper divisors (178700504).

225437188 is a wasteful number, since it uses less digits than its factorization.

225437188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374662 (or 1374660 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 225437188 is about 15014.5658611896. The cubic root of 225437188 is about 608.6138803489.

It can be divided in two parts, 225437 and 188, that added together give a square (225625 = 475²).

The spelling of 225437188 in words is "two hundred twenty-five million, four hundred thirty-seven thousand, one hundred eighty-eight".