25678193 has 4 divisors (see below), whose sum is σ = 25750080. Its totient is φ = 25606308.

The previous prime is 25678187. The next prime is 25678223. The reversal of 25678193 is 39187652.

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-25678193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25678193.

It is not an unprimeable number, because it can be changed into a prime (25678123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35405 + ... + 36122.

It is an arithmetic number, because the mean of its divisors is an integer number (6437520).

Almost surely, 2^25678193 is an apocalyptic number.

It is an amenable number.

25678193 is a deficient number, since it is larger than the sum of its proper divisors (71887).

25678193 is an equidigital number, since it uses as much as digits as its factorization.

25678193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71886.

The product of its digits is 90720, while the sum is 41.

The square root of 25678193 is about 5067.3654890880. The cubic root of 25678193 is about 295.0222831008.

The spelling of 25678193 in words is "twenty-five million, six hundred seventy-eight thousand, one hundred ninety-three".