1225662667 has 2 divisors, whose sum is σ = 1225662668. Its totient is φ = 1225662666.

The previous prime is 1225662653. The next prime is 1225662671. The reversal of 1225662667 is 7662665221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225662667 - 2¹¹ = 1225660619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225662967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612831333 + 612831334.

It is an arithmetic number, because the mean of its divisors is an integer number (612831334).

Almost surely, 2^1225662667 is an apocalyptic number.

1225662667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225662667 is an equidigital number, since it uses as much as digits as its factorization.

1225662667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 1225662667 is about 35009.4653915195. The cubic root of 1225662667 is about 1070.1803833076.

The spelling of 1225662667 in words is "one billion, two hundred twenty-five million, six hundred sixty-two thousand, six hundred sixty-seven".