19136572125 has 128 divisors (see below), whose sum is σ = 36411088896. Its totient is φ = 8835200000.

The previous prime is 19136572109. The next prime is 19136572127. The reversal of 19136572125 is 52127563191.

It is a happy number.

Together with 17274516770 it forms a betrothed pair.

It is not a de Polignac number, because 19136572125 - 2⁴ = 19136572109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19136572127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38044624 + ... + 38045126.

It is an arithmetic number, because the mean of its divisors is an integer number (284461632).

Almost surely, 2^19136572125 is an apocalyptic number.

19136572125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19136572125 is a deficient number, since it is larger than the sum of its proper divisors (17274516771).

19136572125 is a wasteful number, since it uses less digits than its factorization.

19136572125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 946 counting only the distinct ones).

The product of its digits is 113400, while the sum is 42.

The spelling of 19136572125 in words is "nineteen billion, one hundred thirty-six million, five hundred seventy-two thousand, one hundred twenty-five".