1225272667 has 2 divisors, whose sum is σ = 1225272668. Its totient is φ = 1225272666.

The previous prime is 1225272623. The next prime is 1225272731. The reversal of 1225272667 is 7662725221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225272667 - 2⁷ = 1225272539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225270667) by changing a digit.

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 as a sum of consecutive naturals, namely, 612636333 + 612636334.

It is an arithmetic number, because the mean of its divisors is an integer number (612636334).

Almost surely, 2^1225272667 is an apocalyptic number.

1225272667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225272667 is an equidigital number, since it uses as much as digits as its factorization.

1225272667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 1225272667 is about 35003.8950261253. The cubic root of 1225272667 is about 1070.0668625059.

Adding to 1225272667 its reverse (7662725221), we get a palindrome (8887997888).

The spelling of 1225272667 in words is "one billion, two hundred twenty-five million, two hundred seventy-two thousand, six hundred sixty-seven".