172738825 has 12 divisors (see below), whose sum is σ = 244795840. Its totient is φ = 118449360.

The previous prime is 172738817. The next prime is 172738837. The reversal of 172738825 is 528837271.

It is not a de Polignac number, because 172738825 - 2³ = 172738817 is a prime.

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, 493365 + ... + 493714.

Almost surely, 2^172738825 is an apocalyptic number.

It is an amenable number.

172738825 is a deficient number, since it is larger than the sum of its proper divisors (72057015).

172738825 is an equidigital number, since it uses as much as digits as its factorization.

172738825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987096 (or 987091 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 172738825 is about 13143.0143041846. The cubic root of 172738825 is about 556.9249232947.

The spelling of 172738825 in words is "one hundred seventy-two million, seven hundred thirty-eight thousand, eight hundred twenty-five".