20425205552441 has 4 divisors (see below), whose sum is σ = 20429173928592. Its totient is φ = 20421237176292.

The previous prime is 20425205552407. The next prime is 20425205552461. The reversal of 20425205552441 is 14425550252402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425205552441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20425205552461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984180355 + ... + 1984190648.

It is an arithmetic number, because the mean of its divisors is an integer number (5107293482148).

Almost surely, 2^{20425205552441} is an apocalyptic number.

It is an amenable number.

20425205552441 is a deficient number, since it is larger than the sum of its proper divisors (3968376151).

20425205552441 is an equidigital number, since it uses as much as digits as its factorization.

20425205552441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968376150.

The product of its (nonzero) digits is 640000, while the sum is 41.

The spelling of 20425205552441 in words is "twenty trillion, four hundred twenty-five billion, two hundred five million, five hundred fifty-two thousand, four hundred forty-one".