172625434992 has 120 divisors (see below), whose sum is σ = 485617843568. Its totient is φ = 57243801600.

The previous prime is 172625434979. The next prime is 172625434997. The reversal of 172625434992 is 299434526271.

It is a happy number.

172625434992 is a `hidden beast` number, since 1 + 7 + 2 + 6 + 2 + 543 + 4 + 9 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172625434997) 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, 44800938 + ... + 44804790.

Almost surely, 2^172625434992 is an apocalyptic number.

172625434992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172625434992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242808921784).

172625434992 is an abundant number, since it is smaller than the sum of its proper divisors (312992408576).

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

172625434992 is a wasteful number, since it uses less digits than its factorization.

172625434992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399 (or 5390 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 172625434992 in words is "one hundred seventy-two billion, six hundred twenty-five million, four hundred thirty-four thousand, nine hundred ninety-two".