20025017126566 has 8 divisors (see below), whose sum is σ = 30604271457744. Its totient is φ = 9823593307320.

The previous prime is 20025017126557. The next prime is 20025017126689. The reversal of 20025017126566 is 66562171052002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94457627850 + ... + 94457628061.

It is an arithmetic number, because the mean of its divisors is an integer number (3825533932218).

Almost surely, 2^{20025017126566} is an apocalyptic number.

20025017126566 is a deficient number, since it is larger than the sum of its proper divisors (10579254331178).

20025017126566 is a wasteful number, since it uses less digits than its factorization.

20025017126566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188915255966.

The product of its (nonzero) digits is 302400, while the sum is 43.

Adding to 20025017126566 its reverse (66562171052002), we get a palindrome (86587188178568).

The spelling of 20025017126566 in words is "twenty trillion, twenty-five billion, seventeen million, one hundred twenty-six thousand, five hundred sixty-six".