19725030000 has 600 divisors, whose sum is σ = 77623177632. Its totient is φ = 4637952000.

The previous prime is 19725029999. The next prime is 19725030053. The reversal of 19725030000 is 3052791.

It is a tau number, because it is divible by the number of its divisors (600).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 26909634 + ... + 26910366.

Almost surely, 2^19725030000 is an apocalyptic number.

19725030000 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 19725030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38811588816).

19725030000 is an abundant number, since it is smaller than the sum of its proper divisors (57898147632).

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

19725030000 is a wasteful number, since it uses less digits than its factorization.

19725030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

Adding to 19725030000 its reverse (3052791), we get a palindrome (19728082791).

The spelling of 19725030000 in words is "nineteen billion, seven hundred twenty-five million, thirty thousand".