172208625 has 16 divisors (see below), whose sum is σ = 286555776. Its totient is φ = 91844400.

The previous prime is 172208591. The next prime is 172208633. The reversal of 172208625 is 526802271.

172208625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172208625 - 2⁸ = 172208369 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229237 + ... + 229986.

It is an arithmetic number, because the mean of its divisors is an integer number (17909736).

Almost surely, 2^172208625 is an apocalyptic number.

172208625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172208625 is a deficient number, since it is larger than the sum of its proper divisors (114347151).

172208625 is an equidigital number, since it uses as much as digits as its factorization.

172208625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459241 (or 459231 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 172208625 is about 13122.8283917759. The cubic root of 172208625 is about 556.3545357547.

The spelling of 172208625 in words is "one hundred seventy-two million, two hundred eight thousand, six hundred twenty-five".