1220143325 has 12 divisors (see below), whose sum is σ = 1514159040. Its totient is φ = 975352560.

The previous prime is 1220143283. The next prime is 1220143367. The reversal of 1220143325 is 5233410221.

It is an interprime number because it is at equal distance from previous prime (1220143283) and next prime (1220143367).

It is not a de Polignac number, because 1220143325 - 2¹² = 1220139229 is a prime.

It is a super-3 number, since 3×1220143325³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220143325.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 14786 + ... + 51564.

It is an arithmetic number, because the mean of its divisors is an integer number (126179920).

Almost surely, 2^1220143325 is an apocalyptic number.

It is an amenable number.

1220143325 is a deficient number, since it is larger than the sum of its proper divisors (294015715).

1220143325 is a wasteful number, since it uses less digits than its factorization.

1220143325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38116 (or 38111 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1220143325 is about 34930.5500242982. The cubic root of 1220143325 is about 1068.5715719595.

Adding to 1220143325 its reverse (5233410221), we get a palindrome (6453553546).

The spelling of 1220143325 in words is "one billion, two hundred twenty million, one hundred forty-three thousand, three hundred twenty-five".