20335425 has 36 divisors (see below), whose sum is σ = 36912816. Its totient is φ = 9796800.

The previous prime is 20335421. The next prime is 20335463. The reversal of 20335425 is 52453302.

It is not a de Polignac number, because 20335425 - 2² = 20335421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20335395 and 20335404.

It is not an unprimeable number, because it can be changed into a prime (20335421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 129447 + ... + 129603.

It is an arithmetic number, because the mean of its divisors is an integer number (1025356).

Almost surely, 2^20335425 is an apocalyptic number.

20335425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20335425 is a deficient number, since it is larger than the sum of its proper divisors (16577391).

20335425 is a wasteful number, since it uses less digits than its factorization.

20335425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 20335425 is about 4509.4816775324. The cubic root of 20335425 is about 272.9508290731.

Adding to 20335425 its reverse (52453302), we get a palindrome (72788727).

The spelling of 20335425 in words is "twenty million, three hundred thirty-five thousand, four hundred twenty-five".