25550279 has 2 divisors, whose sum is σ = 25550280. Its totient is φ = 25550278.

The previous prime is 25550267. The next prime is 25550311. The reversal of 25550279 is 97205552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25550279 - 2²⁰ = 24501703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25553279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12775139 + 12775140.

It is an arithmetic number, because the mean of its divisors is an integer number (12775140).

Almost surely, 2^25550279 is an apocalyptic number.

25550279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25550279 is an equidigital number, since it uses as much as digits as its factorization.

25550279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 25550279 is about 5054.7283804375. The cubic root of 25550279 is about 294.5315902594.

The spelling of 25550279 in words is "twenty-five million, five hundred fifty thousand, two hundred seventy-nine".