1225466687 has 2 divisors, whose sum is σ = 1225466688. Its totient is φ = 1225466686.

The previous prime is 1225466663. The next prime is 1225466699. The reversal of 1225466687 is 7866645221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225466687 - 2²² = 1221272383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225466387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612733343 + 612733344.

It is an arithmetic number, because the mean of its divisors is an integer number (612733344).

Almost surely, 2^1225466687 is an apocalyptic number.

1225466687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225466687 is an equidigital number, since it uses as much as digits as its factorization.

1225466687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 47.

The square root of 1225466687 is about 35006.6663222878. Note that the first 3 decimals coincide. The cubic root of 1225466687 is about 1070.1233406599.

The spelling of 1225466687 in words is "one billion, two hundred twenty-five million, four hundred sixty-six thousand, six hundred eighty-seven".