163345525 has 12 divisors (see below), whose sum is σ = 231484192. Its totient is φ = 112008240.

The previous prime is 163345513. The next prime is 163345543. The reversal of 163345525 is 525543361.

It is not a de Polignac number, because 163345525 - 2¹⁷ = 163214453 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466527 + ... + 466876.

Almost surely, 2^163345525 is an apocalyptic number.

It is an amenable number.

163345525 is a deficient number, since it is larger than the sum of its proper divisors (68138667).

163345525 is an equidigital number, since it uses as much as digits as its factorization.

163345525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933420 (or 933415 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 163345525 is about 12780.6699746140. The cubic root of 163345525 is about 546.6412662119.

Adding to 163345525 its reverse (525543361), we get a palindrome (688888886).

The spelling of 163345525 in words is "one hundred sixty-three million, three hundred forty-five thousand, five hundred twenty-five".