1255521224 has 16 divisors (see below), whose sum is σ = 2408849520. Its totient is φ = 613161360.

The previous prime is 1255521221. The next prime is 1255521227. The reversal of 1255521224 is 4221255521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1255521221) and next prime (1255521227).

It is not an unprimeable number, because it can be changed into a prime (1255521221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824542 + ... + 1825229.

It is an arithmetic number, because the mean of its divisors is an integer number (150553095).

Almost surely, 2^1255521224 is an apocalyptic number.

It is an amenable number.

1255521224 is a deficient number, since it is larger than the sum of its proper divisors (1153328296).

1255521224 is a wasteful number, since it uses less digits than its factorization.

1255521224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649820 (or 3649816 counting only the distinct ones).

The product of its digits is 8000, while the sum is 29.

The square root of 1255521224 is about 35433.3349263092. The cubic root of 1255521224 is about 1078.8010311323.

Adding to 1255521224 its reverse (4221255521), we get a palindrome (5476776745).

The spelling of 1255521224 in words is "one billion, two hundred fifty-five million, five hundred twenty-one thousand, two hundred twenty-four".