1220506325 has 48 divisors (see below), whose sum is σ = 1659268800. Its totient is φ = 887040000.

The previous prime is 1220506297. The next prime is 1220506337. The reversal of 1220506325 is 5236050221.

1220506325 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220506325 - 2¹⁰ = 1220505301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220506294 and 1220506303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3457349 + ... + 3457701.

It is an arithmetic number, because the mean of its divisors is an integer number (34568100).

Almost surely, 2^1220506325 is an apocalyptic number.

It is an amenable number.

1220506325 is a deficient number, since it is larger than the sum of its proper divisors (438762475).

1220506325 is a wasteful number, since it uses less digits than its factorization.

1220506325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1220506325 is about 34935.7456625732. The cubic root of 1220506325 is about 1068.6775302821.

Adding to 1220506325 its reverse (5236050221), we get a palindrome (6456556546).

The spelling of 1220506325 in words is "one billion, two hundred twenty million, five hundred six thousand, three hundred twenty-five".