2172425320 has 32 divisors (see below), whose sum is σ = 5263954920. Its totient is φ = 802126080.

The previous prime is 2172425309. The next prime is 2172425327. The reversal of 2172425320 is 235242712.

It can be written as a sum of positive squares in 4 ways, for example, as 1763496036 + 408929284 = 41994^2 + 20222^2 .

It is not an unprimeable number, because it can be changed into a prime (2172425327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088351 + ... + 2089390.

Almost surely, 2^2172425320 is an apocalyptic number.

2172425320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172425320 is an abundant number, since it is smaller than the sum of its proper divisors (3091529600).

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

2172425320 is a wasteful number, since it uses less digits than its factorization.

2172425320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177765 (or 4177761 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2172425320 is about 46609.2836246171. The cubic root of 2172425320 is about 1295.1347375001.

The spelling of 2172425320 in words is "two billion, one hundred seventy-two million, four hundred twenty-five thousand, three hundred twenty".