20013725501517 has 32 divisors (see below), whose sum is σ = 29903324817024. Its totient is φ = 11799466905600.

The previous prime is 20013725501513. The next prime is 20013725501551. The reversal of 20013725501517 is 71510552731002.

It is a happy number.

It is not a de Polignac number, because 20013725501517 - 2² = 20013725501513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013725501513) 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, 4896193 + ... + 8000009.

It is an arithmetic number, because the mean of its divisors is an integer number (934478900532).

Almost surely, 2^{20013725501517} is an apocalyptic number.

It is an amenable number.

20013725501517 is a deficient number, since it is larger than the sum of its proper divisors (9889599315507).

20013725501517 is a wasteful number, since it uses less digits than its factorization.

20013725501517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109149.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 20013725501517 in words is "twenty trillion, thirteen billion, seven hundred twenty-five million, five hundred one thousand, five hundred seventeen".