163540031010025 has 12 divisors (see below), whose sum is σ = 202809794776524. Its totient is φ = 130819020728000.

The previous prime is 163540031009917. The next prime is 163540031010043. The reversal of 163540031010025 is 520010130045361.

163540031010025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 11599228423696 + 151940802586329 = 3405764^2 + 12326427^2 .

It is a de Polignac number, because none of the positive numbers 2^k-163540031010025 is a prime.

It is a Duffinian 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, 324845446 + ... + 325348495.

It is an arithmetic number, because the mean of its divisors is an integer number (16900816231377).

Almost surely, 2^{163540031010025} is an apocalyptic number.

It is an amenable number.

163540031010025 is a deficient number, since it is larger than the sum of its proper divisors (39269763766499).

163540031010025 is a wasteful number, since it uses less digits than its factorization.

163540031010025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650204012 (or 650204007 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 163540031010025 its reverse (520010130045361), we get a palindrome (683550161055386).

The spelling of 163540031010025 in words is "one hundred sixty-three trillion, five hundred forty billion, thirty-one million, ten thousand, twenty-five".