20125600616417 has 4 divisors (see below), whose sum is σ = 20401293775620. Its totient is φ = 19849907457216.

The previous prime is 20125600616399. The next prime is 20125600616419. The reversal of 20125600616417 is 71461600652102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16215110186401 + 3910490430016 = 4026799^2 + 1977496^2 .

It is a cyclic number.

It is not a de Polignac number, because 20125600616417 - 2¹⁴ = 20125600600033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20125600616419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137846579492 + ... + 137846579637.

It is an arithmetic number, because the mean of its divisors is an integer number (5100323443905).

Almost surely, 2^{20125600616417} is an apocalyptic number.

It is an amenable number.

20125600616417 is a deficient number, since it is larger than the sum of its proper divisors (275693159203).

20125600616417 is an equidigital number, since it uses as much as digits as its factorization.

20125600616417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275693159202.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 20125600616417 in words is "twenty trillion, one hundred twenty-five billion, six hundred million, six hundred sixteen thousand, four hundred seventeen".