20355211025 has 24 divisors (see below), whose sum is σ = 26352432384. Its totient is φ = 15567552000.

The previous prime is 20355210989. The next prime is 20355211027. The reversal of 20355211025 is 52011255302.

It is not a de Polignac number, because 20355211025 - 2⁶ = 20355210961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20355210985 and 20355211003.

It is not an unprimeable number, because it can be changed into a prime (20355211027) by changing a digit.

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, 1151000 + ... + 1168550.

It is an arithmetic number, because the mean of its divisors is an integer number (1098018016).

Almost surely, 2^20355211025 is an apocalyptic number.

20355211025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20355211025 is a deficient number, since it is larger than the sum of its proper divisors (5997221359).

20355211025 is a wasteful number, since it uses less digits than its factorization.

20355211025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19601 (or 19596 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 20355211025 its reverse (52011255302), we get a palindrome (72366466327).

The spelling of 20355211025 in words is "twenty billion, three hundred fifty-five million, two hundred eleven thousand, twenty-five".