1220543325 has 36 divisors (see below), whose sum is σ = 2223205920. Its totient is φ = 639916320.

The previous prime is 1220543267. The next prime is 1220543333. The reversal of 1220543325 is 5233450221.

It is a happy number.

1220543325 is a `hidden beast` number, since 1 + 2 + 205 + 433 + 25 = 666.

It is not a de Polignac number, because 1220543325 - 2¹³ = 1220535133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32697 + ... + 59246.

It is an arithmetic number, because the mean of its divisors is an integer number (61755720).

Almost surely, 2^1220543325 is an apocalyptic number.

1220543325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220543325 is a deficient number, since it is larger than the sum of its proper divisors (1002662595).

1220543325 is a wasteful number, since it uses less digits than its factorization.

1220543325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92018 (or 92010 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1220543325 is about 34936.2752021448. The cubic root of 1220543325 is about 1068.6883292618.

Adding to 1220543325 its reverse (5233450221), we get a palindrome (6453993546).

The spelling of 1220543325 in words is "one billion, two hundred twenty million, five hundred forty-three thousand, three hundred twenty-five".