19629939025 has 12 divisors (see below), whose sum is σ = 24419401344. Its totient is φ = 15653450000.

The previous prime is 19629939013. The next prime is 19629939089. The reversal of 19629939025 is 52093992691.

It is not a de Polignac number, because 19629939025 - 2²⁵ = 19596384593 is a prime.

It is a super-2 number, since 2×19629939025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1254601 + ... + 1270150.

It is an arithmetic number, because the mean of its divisors is an integer number (2034950112).

Almost surely, 2^19629939025 is an apocalyptic number.

It is an amenable number.

19629939025 is a deficient number, since it is larger than the sum of its proper divisors (4789462319).

19629939025 is a wasteful number, since it uses less digits than its factorization.

19629939025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525072 (or 2525067 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 55.

The spelling of 19629939025 in words is "nineteen billion, six hundred twenty-nine million, nine hundred thirty-nine thousand, twenty-five".