19924734025 has 81 divisors (see below), whose sum is σ = 29811652479. Its totient is φ = 13171455360.

The previous prime is 19924734023. The next prime is 19924734061. The reversal of 19924734025 is 52043742991.

The square root of 19924734025 is 141155.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1414587321 + 18510146704 = 37611^2 + 136052^2 .

It is not a de Polignac number, because 19924734025 - 2¹ = 19924734023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19924734023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 182795671 + ... + 182795779.

Almost surely, 2^19924734025 is an apocalyptic number.

19924734025 is the 141155-th square number.

19924734025 is the 70578-th centered octagonal number.

It is an amenable number.

19924734025 is a deficient number, since it is larger than the sum of its proper divisors (9886918454).

19924734025 is an equidigital number, since it uses as much as digits as its factorization.

19924734025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 19924734025 in words is "nineteen billion, nine hundred twenty-four million, seven hundred thirty-four thousand, twenty-five".