25681933 has 4 divisors (see below), whose sum is σ = 26117280. Its totient is φ = 25246588.

The previous prime is 25681927. The next prime is 25681969. The reversal of 25681933 is 33918652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25681933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25681892 and 25681901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25681913) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 217585 + ... + 217702.

It is an arithmetic number, because the mean of its divisors is an integer number (6529320).

Almost surely, 2^25681933 is an apocalyptic number.

It is an amenable number.

25681933 is a deficient number, since it is larger than the sum of its proper divisors (435347).

25681933 is an equidigital number, since it uses as much as digits as its factorization.

25681933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435346.

The product of its digits is 38880, while the sum is 37.

The square root of 25681933 is about 5067.7345037008. The cubic root of 25681933 is about 295.0366056270.

The spelling of 25681933 in words is "twenty-five million, six hundred eighty-one thousand, nine hundred thirty-three".