172531425040 has 160 divisors (see below), whose sum is σ = 446571417600. Its totient is φ = 61559930880.

The previous prime is 172531424983. The next prime is 172531425083. The reversal of 172531425040 is 40524135271.

It is a junction number, because it is equal to n+sod(n) for n = 172531424987 and 172531425005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24789081 + ... + 24796039.

It is an arithmetic number, because the mean of its divisors is an integer number (2791071360).

Almost surely, 2^172531425040 is an apocalyptic number.

172531425040 is a gapful number since it is divisible by the number (10) 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 172531425040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223285708800).

172531425040 is an abundant number, since it is smaller than the sum of its proper divisors (274039992560).

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

172531425040 is a wasteful number, since it uses less digits than its factorization.

172531425040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785 (or 7779 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 172531425040 in words is "one hundred seventy-two billion, five hundred thirty-one million, four hundred twenty-five thousand, forty".