20353213425 has 24 divisors (see below), whose sum is σ = 33730628800. Its totient is φ = 10829246400.

The previous prime is 20353213417. The next prime is 20353213451. The reversal of 20353213425 is 52431235302.

It is not a de Polignac number, because 20353213425 - 2³ = 20353213417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20353213392 and 20353213401.

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, 290725 + ... + 353874.

Almost surely, 2^20353213425 is an apocalyptic number.

20353213425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20353213425 is a deficient number, since it is larger than the sum of its proper divisors (13377415375).

20353213425 is a wasteful number, since it uses less digits than its factorization.

20353213425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645033 (or 645028 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20353213425 its reverse (52431235302), we get a palindrome (72784448727).

The spelling of 20353213425 in words is "twenty billion, three hundred fifty-three million, two hundred thirteen thousand, four hundred twenty-five".