172708725 has 48 divisors (see below), whose sum is σ = 340549632. Its totient is φ = 75514560.

The previous prime is 172708699. The next prime is 172708733. The reversal of 172708725 is 527807271.

It is not a de Polignac number, because 172708725 - 2⁵ = 172708693 is a prime.

It is a super-2 number, since 2×172708725² = 59656607382251250, which contains 22 as substring.

It is a Curzon number.

It is a congruent 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, 4924 + ... + 19226.

It is an arithmetic number, because the mean of its divisors is an integer number (7094784).

Almost surely, 2^172708725 is an apocalyptic number.

172708725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172708725 is a deficient number, since it is larger than the sum of its proper divisors (167840907).

172708725 is a wasteful number, since it uses less digits than its factorization.

172708725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14346 (or 14341 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 172708725 is about 13141.8691592939. The cubic root of 172708725 is about 556.8925730805.

The spelling of 172708725 in words is "one hundred seventy-two million, seven hundred eight thousand, seven hundred twenty-five".