163501425311225 has 12 divisors (see below), whose sum is σ = 213412386722640. Its totient is φ = 123916869709200.

The previous prime is 163501425311153. The next prime is 163501425311311. The reversal of 163501425311225 is 522113524105361.

It is a de Polignac number, because none of the positive numbers 2^k-163501425311225 is a prime.

It is a super-2 number, since 2×163501425311225² (a number of 29 digits) contains 22 as substring.

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, 172106763011 + ... + 172106763960.

It is an arithmetic number, because the mean of its divisors is an integer number (17784365560220).

Almost surely, 2^{163501425311225} is an apocalyptic number.

It is an amenable number.

163501425311225 is a deficient number, since it is larger than the sum of its proper divisors (49910961411415).

163501425311225 is a wasteful number, since it uses less digits than its factorization.

163501425311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344213527000 (or 344213526995 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 163501425311225 its reverse (522113524105361), we get a palindrome (685614949416586).

The spelling of 163501425311225 in words is "one hundred sixty-three trillion, five hundred one billion, four hundred twenty-five million, three hundred eleven thousand, two hundred twenty-five".