20125533355351 has 4 divisors (see below), whose sum is σ = 20128798903192. Its totient is φ = 20122267807512.

The previous prime is 20125533355289. The next prime is 20125533355397. The reversal of 20125533355351 is 15355333552102.

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

It is a cyclic number.

It is not a de Polignac number, because 20125533355351 - 2⁷ = 20125533355223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20125533355298 and 20125533355307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125533358351) 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, 1632764676 + ... + 1632777001.

It is an arithmetic number, because the mean of its divisors is an integer number (5032199725798).

Almost surely, 2^{20125533355351} is an apocalyptic number.

20125533355351 is a deficient number, since it is larger than the sum of its proper divisors (3265547841).

20125533355351 is an equidigital number, since it uses as much as digits as its factorization.

20125533355351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265547840.

The product of its (nonzero) digits is 1012500, while the sum is 43.

The spelling of 20125533355351 in words is "twenty trillion, one hundred twenty-five billion, five hundred thirty-three million, three hundred fifty-five thousand, three hundred fifty-one".