1220533325 has 12 divisors (see below), whose sum is σ = 1651049088. Its totient is φ = 887660400.

The previous prime is 1220533291. The next prime is 1220533403. The reversal of 1220533325 is 5233350221.

It is not a de Polignac number, because 1220533325 - 2⁶ = 1220533261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220533294 and 1220533303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2218877 + ... + 2219426.

It is an arithmetic number, because the mean of its divisors is an integer number (137587424).

Almost surely, 2^1220533325 is an apocalyptic number.

It is an amenable number.

1220533325 is a deficient number, since it is larger than the sum of its proper divisors (430515763).

1220533325 is a wasteful number, since it uses less digits than its factorization.

1220533325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438324 (or 4438319 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 1220533325 is about 34936.1320841332. The cubic root of 1220533325 is about 1068.6854106402.

Adding to 1220533325 its reverse (5233350221), we get a palindrome (6453883546).

The spelling of 1220533325 in words is "one billion, two hundred twenty million, five hundred thirty-three thousand, three hundred twenty-five".