25683630 has 128 divisors (see below), whose sum is σ = 76446720. Its totient is φ = 5391360.

The previous prime is 25683629. The next prime is 25683643. The reversal of 25683630 is 3638652.

It is a junction number, because it is equal to n+sod(n) for n = 25683591 and 25683600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 163512 + ... + 163668.

It is an arithmetic number, because the mean of its divisors is an integer number (597240).

Almost surely, 2^25683630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25683630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38223360).

25683630 is an abundant number, since it is smaller than the sum of its proper divisors (50763090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25683630 is a wasteful number, since it uses less digits than its factorization.

25683630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25683630 is about 5067.9019327528. The cubic root of 25683630 is about 295.0431039189.

The spelling of 25683630 in words is "twenty-five million, six hundred eighty-three thousand, six hundred thirty".