163545900325 has 24 divisors (see below), whose sum is σ = 205949996928. Its totient is φ = 128817170880.

The previous prime is 163545900319. The next prime is 163545900361. The reversal of 163545900325 is 523009545361.

It is not a de Polignac number, because 163545900325 - 2³ = 163545900317 is a prime.

It is a super-2 number, since 2×163545900325² (a number of 23 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 261912 + ... + 629038.

It is an arithmetic number, because the mean of its divisors is an integer number (8581249872).

Almost surely, 2^163545900325 is an apocalyptic number.

It is an amenable number.

163545900325 is a deficient number, since it is larger than the sum of its proper divisors (42404096603).

163545900325 is a wasteful number, since it uses less digits than its factorization.

163545900325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367413 (or 367408 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 163545900325 in words is "one hundred sixty-three billion, five hundred forty-five million, nine hundred thousand, three hundred twenty-five".