1252223144 has 8 divisors (see below), whose sum is σ = 2347918410. Its totient is φ = 626111568.

The previous prime is 1252223143. The next prime is 1252223171. The reversal of 1252223144 is 4413222521.

It can be written as a sum of positive squares in only one way, i.e., 1007300644 + 244922500 = 31738^2 + 15650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1252223143) 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, 78263939 + ... + 78263954.

Almost surely, 2^1252223144 is an apocalyptic number.

It is an amenable number.

1252223144 is a deficient number, since it is larger than the sum of its proper divisors (1095695266).

1252223144 is a wasteful number, since it uses less digits than its factorization.

1252223144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156527899 (or 156527895 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1252223144 is about 35386.7650965725. The cubic root of 1252223144 is about 1077.8555826009.

Adding to 1252223144 its reverse (4413222521), we get a palindrome (5665445665).

The spelling of 1252223144 in words is "one billion, two hundred fifty-two million, two hundred twenty-three thousand, one hundred forty-four".