25830634 has 4 divisors (see below), whose sum is σ = 38745954. Its totient is φ = 12915316.

The previous prime is 25830617. The next prime is 25830641. The reversal of 25830634 is 43603852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 7038409 = 4335^2 + 2653^2 .

It is a Smith number, since the sum of its digits (31) 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 = 25830596 and 25830605.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6457657 + ... + 6457660.

Almost surely, 2^25830634 is an apocalyptic number.

25830634 is a deficient number, since it is larger than the sum of its proper divisors (12915320).

25830634 is a wasteful number, since it uses less digits than its factorization.

25830634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915319.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 25830634 is about 5082.3846765077. The cubic root of 25830634 is about 295.6049407639.

The spelling of 25830634 in words is "twenty-five million, eight hundred thirty thousand, six hundred thirty-four".