172625 has 8 divisors (see below), whose sum is σ = 215592. Its totient is φ = 138000.

The previous prime is 172619. The next prime is 172633. The reversal of 172625 is 526271.

Added to its reverse (526271) it gives a square (698896 = 836²).

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 163216 = 97^2 + 404^2 .

It is not a de Polignac number, because 172625 - 2⁶ = 172561 is a prime.

It is a d-powerful number, because it can be written as 1 + 7⁶ + 6⁶ + 2 + 2¹³ + 5³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566 + ... + 815.

It is an arithmetic number, because the mean of its divisors is an integer number (26949).

2¹⁷²⁶²⁵ is an apocalyptic number.

It is an amenable number.

172625 is a deficient number, since it is larger than the sum of its proper divisors (42967).

172625 is an equidigital number, since it uses as much as digits as its factorization.

172625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1386 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 172625 is about 415.4816482108. The cubic root of 172625 is about 55.6802569199.

Adding to 172625 its reverse (526271), we get a palindrome (698896).

It can be divided in two parts, 172 and 625, that added together give a palindrome (797).

The spelling of 172625 in words is "one hundred seventy-two thousand, six hundred twenty-five".