172625994 has 48 divisors (see below), whose sum is σ = 399402432. Its totient is φ = 53754624.

The previous prime is 172625993. The next prime is 172626019. The reversal of 172625994 is 499526271.

172625994 is a `hidden beast` number, since 17 + 2 + 625 + 9 + 9 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (172625993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12954 + ... + 22650.

It is an arithmetic number, because the mean of its divisors is an integer number (8320884).

Almost surely, 2^172625994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172625994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199701216).

172625994 is an abundant number, since it is smaller than the sum of its proper divisors (226776438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172625994 is a wasteful number, since it uses less digits than its factorization.

172625994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9771 (or 9768 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 172625994 is about 13138.7211706467. The cubic root of 172625994 is about 556.8036379135.

The spelling of 172625994 in words is "one hundred seventy-two million, six hundred twenty-five thousand, nine hundred ninety-four".