1725116720 has 20 divisors (see below), whose sum is σ = 4010896560. Its totient is φ = 690046656.

The previous prime is 1725116711. The next prime is 1725116747. The reversal of 1725116720 is 276115271.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10781900 + ... + 10782059.

It is an arithmetic number, because the mean of its divisors is an integer number (200544828).

Almost surely, 2^1725116720 is an apocalyptic number.

1725116720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1725116720 is an abundant number, since it is smaller than the sum of its proper divisors (2285779840).

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

1725116720 is a wasteful number, since it uses less digits than its factorization.

1725116720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21563972 (or 21563966 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1725116720 is about 41534.5244344991. The cubic root of 1725116720 is about 1199.3322025151.

The spelling of 1725116720 in words is "one billion, seven hundred twenty-five million, one hundred sixteen thousand, seven hundred twenty".