164323025 has 6 divisors (see below), whose sum is σ = 203760582. Its totient is φ = 131458400.

The previous prime is 164323013. The next prime is 164323043. The reversal of 164323025 is 520323461.

It can be written as a sum of positive squares in 3 ways, for example, as 50751376 + 113571649 = 7124^2 + 10657^2 .

It is a de Polignac number, because none of the positive numbers 2^k-164323025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 164322985 and 164323003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3286436 + ... + 3286485.

It is an arithmetic number, because the mean of its divisors is an integer number (33960097).

Almost surely, 2^164323025 is an apocalyptic number.

It is an amenable number.

164323025 is a deficient number, since it is larger than the sum of its proper divisors (39437557).

164323025 is an equidigital number, since it uses as much as digits as its factorization.

164323025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572931 (or 6572926 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 164323025 is about 12818.8542779766. The cubic root of 164323025 is about 547.7295104707.

Adding to 164323025 its reverse (520323461), we get a palindrome (684646486).

The spelling of 164323025 in words is "one hundred sixty-four million, three hundred twenty-three thousand, twenty-five".