163925045 has 4 divisors (see below), whose sum is σ = 196710060. Its totient is φ = 131140032.

The previous prime is 163925039. The next prime is 163925057. The reversal of 163925045 is 540529361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540529361 = 31 ⋅17436431.

It can be written as a sum of positive squares in 2 ways, for example, as 65399569 + 98525476 = 8087^2 + 9926^2 .

It is a cyclic number.

It is not a de Polignac number, because 163925045 - 2¹⁰ = 163924021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163924996 and 163925014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16392500 + ... + 16392509.

It is an arithmetic number, because the mean of its divisors is an integer number (49177515).

Almost surely, 2^163925045 is an apocalyptic number.

It is an amenable number.

163925045 is a deficient number, since it is larger than the sum of its proper divisors (32785015).

163925045 is an equidigital number, since it uses as much as digits as its factorization.

163925045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32785014.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 163925045 is about 12803.3216393247. The cubic root of 163925045 is about 547.2869642318.

The spelling of 163925045 in words is "one hundred sixty-three million, nine hundred twenty-five thousand, forty-five".