19520138950125 has 32 divisors (see below), whose sum is σ = 35434375876224. Its totient is φ = 9464309792000.

The previous prime is 19520138950121. The next prime is 19520138950163. The reversal of 19520138950125 is 52105983102591.

It is not a de Polignac number, because 19520138950125 - 2² = 19520138950121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19520138950121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2366073324 + ... + 2366081573.

It is an arithmetic number, because the mean of its divisors is an integer number (1107324246132).

Almost surely, 2^{19520138950125} is an apocalyptic number.

19520138950125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19520138950125 is a deficient number, since it is larger than the sum of its proper divisors (15914236926099).

19520138950125 is a wasteful number, since it uses less digits than its factorization.

19520138950125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732154926 (or 4732154916 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 19520138950125 in words is "nineteen trillion, five hundred twenty billion, one hundred thirty-eight million, nine hundred fifty thousand, one hundred twenty-five".