1225214566 has 32 divisors (see below), whose sum is σ = 1912303008. Its totient is φ = 588349440.

The previous prime is 1225214539. The next prime is 1225214689. The reversal of 1225214566 is 6654125221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609626 + ... + 1610386.

It is an arithmetic number, because the mean of its divisors is an integer number (59759469).

Almost surely, 2^1225214566 is an apocalyptic number.

1225214566 is a deficient number, since it is larger than the sum of its proper divisors (687088442).

1225214566 is a wasteful number, since it uses less digits than its factorization.

1225214566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096.

The product of its digits is 28800, while the sum is 34.

The square root of 1225214566 is about 35003.0650943600. The cubic root of 1225214566 is about 1070.0499484646.

Adding to 1225214566 its reverse (6654125221), we get a palindrome (7879339787).

The spelling of 1225214566 in words is "one billion, two hundred twenty-five million, two hundred fourteen thousand, five hundred sixty-six".