163604525 has 12 divisors (see below), whose sum is σ = 231851232. Its totient is φ = 112185840.

The previous prime is 163604477. The next prime is 163604527. The reversal of 163604525 is 525406361.

It is not a de Polignac number, because 163604525 - 2¹⁰ = 163603501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163604491 and 163604500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163604527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467267 + ... + 467616.

It is an arithmetic number, because the mean of its divisors is an integer number (19320936).

Almost surely, 2^163604525 is an apocalyptic number.

It is an amenable number.

163604525 is a deficient number, since it is larger than the sum of its proper divisors (68246707).

163604525 is an equidigital number, since it uses as much as digits as its factorization.

163604525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934900 (or 934895 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 163604525 is about 12790.7984504487. The cubic root of 163604525 is about 546.9300310336.

The spelling of 163604525 in words is "one hundred sixty-three million, six hundred four thousand, five hundred twenty-five".