20834025 has 12 divisors (see below), whose sum is σ = 34445712. Its totient is φ = 11111440.

The previous prime is 20834003. The next prime is 20834029. The reversal of 20834025 is 52043802.

It is not a de Polignac number, because 20834025 - 2⁶ = 20833961 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20833986 and 20834004.

It is not an unprimeable number, because it can be changed into a prime (20834029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138819 + ... + 138968.

It is an arithmetic number, because the mean of its divisors is an integer number (2870476).

Almost surely, 2^20834025 is an apocalyptic number.

20834025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20834025 is a deficient number, since it is larger than the sum of its proper divisors (13611687).

20834025 is a wasteful number, since it uses less digits than its factorization.

20834025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277800 (or 277795 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20834025 is about 4564.4304135346. The cubic root of 20834025 is about 275.1636491515.

Adding to 20834025 its reverse (52043802), we get a palindrome (72877827).

The spelling of 20834025 in words is "twenty million, eight hundred thirty-four thousand, twenty-five".