1144222225 has 24 divisors (see below), whose sum is σ = 1463712120. Its totient is φ = 886648320.

The previous prime is 1144222207. The next prime is 1144222241. The reversal of 1144222225 is 5222224411.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 622602304 + 521619921 = 24952^2 + 22839^2 .

It is not a de Polignac number, because 1144222225 - 2¹³ = 1144214033 is a prime.

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 1144222225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212871 + ... + 218179.

It is an arithmetic number, because the mean of its divisors is an integer number (60988005).

Almost surely, 2^1144222225 is an apocalyptic number.

It is an amenable number.

1144222225 is a deficient number, since it is larger than the sum of its proper divisors (319489895).

1144222225 is a wasteful number, since it uses less digits than its factorization.

1144222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589 (or 5584 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 1144222225 is about 33826.3540009857. The cubic root of 1144222225 is about 1045.9320225948.

Adding to 1144222225 its reverse (5222224411), we get a palindrome (6366446636).

The spelling of 1144222225 in words is "one billion, one hundred forty-four million, two hundred twenty-two thousand, two hundred twenty-five".