20353502425 has 24 divisors (see below), whose sum is σ = 25514894720. Its totient is φ = 16105262400.

The previous prime is 20353502423. The next prime is 20353502437. The reversal of 20353502425 is 52420535302.

It is not a de Polignac number, because 20353502425 - 2¹ = 20353502423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20353502423) 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, 930919 + ... + 952531.

Almost surely, 2^20353502425 is an apocalyptic number.

20353502425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20353502425 is a deficient number, since it is larger than the sum of its proper divisors (5161392295).

20353502425 is a wasteful number, since it uses less digits than its factorization.

20353502425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22033 (or 22028 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 31.

The spelling of 20353502425 in words is "twenty billion, three hundred fifty-three million, five hundred two thousand, four hundred twenty-five".