172225145752 has 48 divisors (see below), whose sum is σ = 355312739880. Its totient is φ = 78203600640.

The previous prime is 172225145749. The next prime is 172225145761. The reversal of 172225145752 is 257541522271.

It is a junction number, because it is equal to n+sod(n) for n = 172225145699 and 172225145708.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 854683 + ... + 1036789.

Almost surely, 2^172225145752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172225145752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177656369940).

172225145752 is an abundant number, since it is smaller than the sum of its proper divisors (183087594128).

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

172225145752 is a wasteful number, since it uses less digits than its factorization.

172225145752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183112 (or 183097 counting only the distinct ones).

The product of its digits is 392000, while the sum is 43.

The spelling of 172225145752 in words is "one hundred seventy-two billion, two hundred twenty-five million, one hundred forty-five thousand, seven hundred fifty-two".