20023550425 has 24 divisors (see below), whose sum is σ = 26564500160. Its totient is φ = 14926939200.

The previous prime is 20023550423. The next prime is 20023550431. The reversal of 20023550425 is 52405532002.

It is not a de Polignac number, because 20023550425 - 2¹ = 20023550423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20023550393 and 20023550402.

It is not an unprimeable number, because it can be changed into a prime (20023550423) 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, 316557 + ... + 374506.

Almost surely, 2^20023550425 is an apocalyptic number.

20023550425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20023550425 is a deficient number, since it is larger than the sum of its proper divisors (6540949735).

20023550425 is a wasteful number, since it uses less digits than its factorization.

20023550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691153 (or 691148 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The spelling of 20023550425 in words is "twenty billion, twenty-three million, five hundred fifty thousand, four hundred twenty-five".