20125516162003 has 16 divisors (see below), whose sum is σ = 24293779211520. Its totient is φ = 16286747836896.

The previous prime is 20125516161911. The next prime is 20125516162027. The reversal of 20125516162003 is 30026161552102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20125516162003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20125516162003.

It is not an unprimeable number, because it can be changed into a prime (20125516162603) 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, 258185725 + ... + 258263662.

It is an arithmetic number, because the mean of its divisors is an integer number (1518361200720).

Almost surely, 2^{20125516162003} is an apocalyptic number.

20125516162003 is a deficient number, since it is larger than the sum of its proper divisors (4168263049517).

20125516162003 is a wasteful number, since it uses less digits than its factorization.

20125516162003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516449706.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 20125516162003 in words is "twenty trillion, one hundred twenty-five billion, five hundred sixteen million, one hundred sixty-two thousand, three".