173425643 has 4 divisors (see below), whose sum is σ = 174489768. Its totient is φ = 172361520.

The previous prime is 173425639. The next prime is 173425657. The reversal of 173425643 is 346524371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346524371 = 23 ⋅15066277.

It is a cyclic number.

It is not a de Polignac number, because 173425643 - 2² = 173425639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173422643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531818 + ... + 532143.

It is an arithmetic number, because the mean of its divisors is an integer number (43622442).

Almost surely, 2^173425643 is an apocalyptic number.

173425643 is a deficient number, since it is larger than the sum of its proper divisors (1064125).

173425643 is a wasteful number, since it uses less digits than its factorization.

173425643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064124.

The product of its digits is 60480, while the sum is 35.

The square root of 173425643 is about 13169.1170167176. The cubic root of 173425643 is about 557.6620674092.

The spelling of 173425643 in words is "one hundred seventy-three million, four hundred twenty-five thousand, six hundred forty-three".