1625653163 has 2 divisors, whose sum is σ = 1625653164. Its totient is φ = 1625653162.

The previous prime is 1625653151. The next prime is 1625653193. The reversal of 1625653163 is 3613565261.

It is a weak prime.

It is an emirp because it is prime and its reverse (3613565261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1625653163 - 2²⁰ = 1624604587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625653123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812826581 + 812826582.

It is an arithmetic number, because the mean of its divisors is an integer number (812826582).

Almost surely, 2^1625653163 is an apocalyptic number.

1625653163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625653163 is an equidigital number, since it uses as much as digits as its factorization.

1625653163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 38.

The square root of 1625653163 is about 40319.3894174999. The cubic root of 1625653163 is about 1175.8248412034.

The spelling of 1625653163 in words is "one billion, six hundred twenty-five million, six hundred fifty-three thousand, one hundred sixty-three".