25679447 has 2 divisors, whose sum is σ = 25679448. Its totient is φ = 25679446.

The previous prime is 25679441. The next prime is 25679461. The reversal of 25679447 is 74497652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25679447 - 2²⁰ = 24630871 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25679398 and 25679407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25679441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12839723 + 12839724.

It is an arithmetic number, because the mean of its divisors is an integer number (12839724).

Almost surely, 2^25679447 is an apocalyptic number.

25679447 is a deficient number, since it is larger than the sum of its proper divisors (1).

25679447 is an equidigital number, since it uses as much as digits as its factorization.

25679447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 25679447 is about 5067.4892205115. The cubic root of 25679447 is about 295.0270855146.

The spelling of 25679447 in words is "twenty-five million, six hundred seventy-nine thousand, four hundred forty-seven".