25205630 has 16 divisors (see below), whose sum is σ = 46336320. Its totient is φ = 9867552.

The previous prime is 25205629. The next prime is 25205633. The reversal of 25205630 is 3650252.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25205596 and 25205605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25205633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26345 + ... + 27284.

It is an arithmetic number, because the mean of its divisors is an integer number (2896020).

Almost surely, 2^25205630 is an apocalyptic number.

25205630 is a deficient number, since it is larger than the sum of its proper divisors (21130690).

25205630 is a wasteful number, since it uses less digits than its factorization.

25205630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53683.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 25205630 is about 5020.5208893102. The cubic root of 25205630 is about 293.2012734866.

Adding to 25205630 its reverse (3650252), we get a palindrome (28855882).

The spelling of 25205630 in words is "twenty-five million, two hundred five thousand, six hundred thirty".