19428810125 has 16 divisors (see below), whose sum is σ = 25301382912. Its totient is φ = 14867261200.

The previous prime is 19428810109. The next prime is 19428810127. The reversal of 19428810125 is 52101882491.

It is not a de Polignac number, because 19428810125 - 2⁴ = 19428810109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19428810127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3376049 + ... + 3381798.

It is an arithmetic number, because the mean of its divisors is an integer number (1581336432).

Almost surely, 2^19428810125 is an apocalyptic number.

It is an amenable number.

19428810125 is a deficient number, since it is larger than the sum of its proper divisors (5872572787).

19428810125 is an equidigital number, since it uses as much as digits as its factorization.

19428810125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6757885 (or 6757875 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 19428810125 in words is "nineteen billion, four hundred twenty-eight million, eight hundred ten thousand, one hundred twenty-five".