25930669 has 4 divisors (see below), whose sum is σ = 26824860. Its totient is φ = 25036480.

The previous prime is 25930651. The next prime is 25930679. The reversal of 25930669 is 96603952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21252100 + 4678569 = 4610^2 + 2163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25930669 is a prime.

It is a super-2 number, since 2×25930669² = 1344799189575122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25930609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447052 + ... + 447109.

It is an arithmetic number, because the mean of its divisors is an integer number (6706215).

Almost surely, 2^25930669 is an apocalyptic number.

25930669 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25930669 is a deficient number, since it is larger than the sum of its proper divisors (894191).

25930669 is an equidigital number, since it uses as much as digits as its factorization.

25930669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894190.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 25930669 is about 5092.2165115007. The cubic root of 25930669 is about 295.9860483137.

The spelling of 25930669 in words is "twenty-five million, nine hundred thirty thousand, six hundred sixty-nine".