20025825 has 24 divisors (see below), whose sum is σ = 33518688. Its totient is φ = 10548480.

The previous prime is 20025823. The next prime is 20025833. The reversal of 20025825 is 52852002.

It is not a de Polignac number, because 20025825 - 2¹ = 20025823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20025795 and 20025804.

It is not an unprimeable number, because it can be changed into a prime (20025823) 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 23 ways as a sum of consecutive naturals, for example, 4617 + ... + 7833.

It is an arithmetic number, because the mean of its divisors is an integer number (1396612).

Almost surely, 2^20025825 is an apocalyptic number.

20025825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20025825 is a deficient number, since it is larger than the sum of its proper divisors (13492863).

20025825 is a wasteful number, since it uses less digits than its factorization.

20025825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3308 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 20025825 is about 4475.0223463129. The cubic root of 20025825 is about 271.5585444669.

Adding to 20025825 its reverse (52852002), we get a palindrome (72877827).

The spelling of 20025825 in words is "twenty million, twenty-five thousand, eight hundred twenty-five".