164625425 has 12 divisors (see below), whose sum is σ = 206011740. Its totient is φ = 130489920.

The previous prime is 164625403. The next prime is 164625509. The reversal of 164625425 is 524526461.

It can be written as a sum of positive squares in 6 ways, for example, as 5058001 + 159567424 = 2249^2 + 12632^2 .

It is not a de Polignac number, because 164625425 - 2¹⁰ = 164624401 is a prime.

It is a Curzon 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, 27482 + ... + 32931.

It is an arithmetic number, because the mean of its divisors is an integer number (17167645).

Almost surely, 2^164625425 is an apocalyptic number.

It is an amenable number.

164625425 is a deficient number, since it is larger than the sum of its proper divisors (41386315).

164625425 is a wasteful number, since it uses less digits than its factorization.

164625425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60532 (or 60527 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 164625425 is about 12830.6439822793. The cubic root of 164625425 is about 548.0652960449.

The spelling of 164625425 in words is "one hundred sixty-four million, six hundred twenty-five thousand, four hundred twenty-five".