19794930225 has 48 divisors (see below), whose sum is σ = 37417128960. Its totient is φ = 9045691200.

The previous prime is 19794930217. The next prime is 19794930241. The reversal of 19794930225 is 52203949791.

It is not a de Polignac number, because 19794930225 - 2³ = 19794930217 is a prime.

It is a super-2 number, since 2×19794930225² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1837906 + ... + 1848644.

It is an arithmetic number, because the mean of its divisors is an integer number (779523520).

Almost surely, 2^19794930225 is an apocalyptic number.

19794930225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19794930225 is a deficient number, since it is larger than the sum of its proper divisors (17622198735).

19794930225 is a wasteful number, since it uses less digits than its factorization.

19794930225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14270 (or 14265 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 19794930225 in words is "nineteen billion, seven hundred ninety-four million, nine hundred thirty thousand, two hundred twenty-five".