1422251657 has 2 divisors, whose sum is σ = 1422251658. Its totient is φ = 1422251656.

The previous prime is 1422251653. The next prime is 1422251681. The reversal of 1422251657 is 7561522241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 771950656 + 650301001 = 27784^2 + 25501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422251657 - 2² = 1422251653 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422251651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711125828 + 711125829.

It is an arithmetic number, because the mean of its divisors is an integer number (711125829).

Almost surely, 2^1422251657 is an apocalyptic number.

It is an amenable number.

1422251657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422251657 is an equidigital number, since it uses as much as digits as its factorization.

1422251657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 1422251657 is about 37712.7519149690. The cubic root of 1422251657 is about 1124.5846452196.

Adding to 1422251657 its reverse (7561522241), we get a palindrome (8983773898).

The spelling of 1422251657 in words is "one billion, four hundred twenty-two million, two hundred fifty-one thousand, six hundred fifty-seven".