25656630 has 16 divisors (see below), whose sum is σ = 61575984. Its totient is φ = 6841760.

The previous prime is 25656629. The next prime is 25656637. The reversal of 25656630 is 3665652.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 25656591 and 25656600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25656637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427581 + ... + 427640.

It is an arithmetic number, because the mean of its divisors is an integer number (3848499).

Almost surely, 2^25656630 is an apocalyptic number.

25656630 is an abundant number, since it is smaller than the sum of its proper divisors (35919354).

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

25656630 is a wasteful number, since it uses less digits than its factorization.

25656630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855231.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 25656630 is about 5065.2374080590. The cubic root of 25656630 is about 294.9396793261.

The spelling of 25656630 in words is "twenty-five million, six hundred fifty-six thousand, six hundred thirty".