1220325266 has 16 divisors (see below), whose sum is σ = 1839264000. Its totient is φ = 607244688.

The previous prime is 1220325259. The next prime is 1220325277. The reversal of 1220325266 is 6625230221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447455 + ... + 450173.

It is an arithmetic number, because the mean of its divisors is an integer number (114954000).

Almost surely, 2^1220325266 is an apocalyptic number.

1220325266 is a deficient number, since it is larger than the sum of its proper divisors (618938734).

1220325266 is a wasteful number, since it uses less digits than its factorization.

1220325266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1220325266 is about 34933.1542520855. The cubic root of 1220325266 is about 1068.6246824735.

Adding to 1220325266 its reverse (6625230221), we get a palindrome (7845555487).

The spelling of 1220325266 in words is "one billion, two hundred twenty million, three hundred twenty-five thousand, two hundred sixty-six".