164002446325 has 12 divisors (see below), whose sum is σ = 215325565380. Its totient is φ = 123484194560.

The previous prime is 164002446323. The next prime is 164002446331. The reversal of 164002446325 is 523644200461.

It can be written as a sum of positive squares in 6 ways, for example, as 2988043569 + 161014402756 = 54663^2 + 401266^2 .

It is not a de Polignac number, because 164002446325 - 2¹ = 164002446323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164002446323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192943630 + ... + 192944479.

It is an arithmetic number, because the mean of its divisors is an integer number (17943797115).

Almost surely, 2^164002446325 is an apocalyptic number.

It is an amenable number.

164002446325 is a deficient number, since it is larger than the sum of its proper divisors (51323119055).

164002446325 is a wasteful number, since it uses less digits than its factorization.

164002446325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385888136 (or 385888131 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 164002446325 its reverse (523644200461), we get a palindrome (687646646786).

The spelling of 164002446325 in words is "one hundred sixty-four billion, two million, four hundred forty-six thousand, three hundred twenty-five".