164154444025 has 48 divisors (see below), whose sum is σ = 241505667648. Its totient is φ = 109110240000.

The previous prime is 164154443993. The next prime is 164154444133. The reversal of 164154444025 is 520444451461.

It is not a de Polignac number, because 164154444025 - 2⁵ = 164154443993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133762 + ... + 588388.

It is an arithmetic number, because the mean of its divisors is an integer number (5031368076).

Almost surely, 2^164154444025 is an apocalyptic number.

It is an amenable number.

164154444025 is a deficient number, since it is larger than the sum of its proper divisors (77351223623).

164154444025 is a wasteful number, since it uses less digits than its factorization.

164154444025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454762 (or 454757 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

Adding to 164154444025 its reverse (520444451461), we get a palindrome (684598895486).

The spelling of 164154444025 in words is "one hundred sixty-four billion, one hundred fifty-four million, four hundred forty-four thousand, twenty-five".