1663025417 has 2 divisors, whose sum is σ = 1663025418. Its totient is φ = 1663025416.

The previous prime is 1663025321. The next prime is 1663025461. The reversal of 1663025417 is 7145203661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1530061456 + 132963961 = 39116^2 + 11531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1663025417 - 2³⁰ = 589283593 is a prime.

It is not a weakly prime, because it can be changed into another prime (1663075417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831512708 + 831512709.

It is an arithmetic number, because the mean of its divisors is an integer number (831512709).

Almost surely, 2^1663025417 is an apocalyptic number.

It is an amenable number.

1663025417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663025417 is an equidigital number, since it uses as much as digits as its factorization.

1663025417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1663025417 is about 40780.2086434094. The cubic root of 1663025417 is about 1184.7670361647.

The spelling of 1663025417 in words is "one billion, six hundred sixty-three million, twenty-five thousand, four hundred seventeen".