20555454425 has 24 divisors (see below), whose sum is σ = 28702900992. Its totient is φ = 14467176000.

The previous prime is 20555454419. The next prime is 20555454431. The reversal of 20555454425 is 52445455502.

It is an interprime number because it is at equal distance from previous prime (20555454419) and next prime (20555454431).

It is not a de Polignac number, because 20555454425 - 2¹⁴ = 20555438041 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1197074 + ... + 1214123.

It is an arithmetic number, because the mean of its divisors is an integer number (1195954208).

Almost surely, 2^20555454425 is an apocalyptic number.

20555454425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20555454425 is a deficient number, since it is larger than the sum of its proper divisors (8147446567).

20555454425 is a wasteful number, since it uses less digits than its factorization.

20555454425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411249 (or 2411244 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 41.

The spelling of 20555454425 in words is "twenty billion, five hundred fifty-five million, four hundred fifty-four thousand, four hundred twenty-five".