163501133525 has 24 divisors (see below), whose sum is σ = 210188672064. Its totient is φ = 126073097600.

The previous prime is 163501133489. The next prime is 163501133603. The reversal of 163501133525 is 525331105361.

163501133525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163501133525 - 2⁸ = 163501133269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 875849 + ... + 1045998.

It is an arithmetic number, because the mean of its divisors is an integer number (8757861336).

Almost surely, 2^163501133525 is an apocalyptic number.

It is an amenable number.

163501133525 is a deficient number, since it is larger than the sum of its proper divisors (46687538539).

163501133525 is a wasteful number, since it uses less digits than its factorization.

163501133525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921981 (or 1921976 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 163501133525 its reverse (525331105361), we get a palindrome (688832238886).

The spelling of 163501133525 in words is "one hundred sixty-three billion, five hundred one million, one hundred thirty-three thousand, five hundred twenty-five".