25680506 has 8 divisors (see below), whose sum is σ = 40786740. Its totient is φ = 12084928.

The previous prime is 25680481. The next prime is 25680521. The reversal of 25680506 is 60508652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25593481 + 87025 = 5059^2 + 295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377621 + ... + 377688.

Almost surely, 2^25680506 is an apocalyptic number.

25680506 is a deficient number, since it is larger than the sum of its proper divisors (15106234).

25680506 is a wasteful number, since it uses less digits than its factorization.

25680506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755328.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 25680506 is about 5067.5937090497. The cubic root of 25680506 is about 295.0311410197.

The spelling of 25680506 in words is "twenty-five million, six hundred eighty thousand, five hundred six".