20855060425 has 6 divisors (see below), whose sum is σ = 25860274958. Its totient is φ = 16684048320.

The previous prime is 20855060399. The next prime is 20855060461. The reversal of 20855060425 is 52406055802.

It can be written as a sum of positive squares in 3 ways, for example, as 1084450761 + 19770609664 = 32931^2 + 140608^2 .

It is not a de Polignac number, because 20855060425 - 2⁵ = 20855060393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417101184 + ... + 417101233.

Almost surely, 2^20855060425 is an apocalyptic number.

20855060425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20855060425 is a deficient number, since it is larger than the sum of its proper divisors (5005214533).

20855060425 is an equidigital number, since it uses as much as digits as its factorization.

20855060425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834202427 (or 834202422 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 20855060425 in words is "twenty billion, eight hundred fifty-five million, sixty thousand, four hundred twenty-five".