163625603 has 4 divisors (see below), whose sum is σ = 163663368. Its totient is φ = 163587840.

The previous prime is 163625551. The next prime is 163625617. The reversal of 163625603 is 306526361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163625603 - 2¹⁰ = 163624579 is a prime.

It is a super-2 number, since 2×163625603² = 53546675914227218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163625603.

It is not an unprimeable number, because it can be changed into a prime (163625003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11393 + ... + 21378.

It is an arithmetic number, because the mean of its divisors is an integer number (40915842).

Almost surely, 2^163625603 is an apocalyptic number.

163625603 is a deficient number, since it is larger than the sum of its proper divisors (37765).

163625603 is an equidigital number, since it uses as much as digits as its factorization.

163625603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37764.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 163625603 is about 12791.6223756019. The cubic root of 163625603 is about 546.9535179474.

The spelling of 163625603 in words is "one hundred sixty-three million, six hundred twenty-five thousand, six hundred three".