163445325 has 12 divisors (see below), whose sum is σ = 270229728. Its totient is φ = 87170800.

The previous prime is 163445287. The next prime is 163445329. The reversal of 163445325 is 523544361.

It is not a de Polignac number, because 163445325 - 2⁷ = 163445197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163445329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1089561 + ... + 1089710.

It is an arithmetic number, because the mean of its divisors is an integer number (22519144).

Almost surely, 2^163445325 is an apocalyptic number.

163445325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163445325 is a deficient number, since it is larger than the sum of its proper divisors (106784403).

163445325 is a wasteful number, since it uses less digits than its factorization.

163445325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179284 (or 2179279 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 163445325 is about 12784.5737120954. The cubic root of 163445325 is about 546.7525715601.

Adding to 163445325 its reverse (523544361), we get a palindrome (686989686).

The spelling of 163445325 in words is "one hundred sixty-three million, four hundred forty-five thousand, three hundred twenty-five".