25278359 has 2 divisors, whose sum is σ = 25278360. Its totient is φ = 25278358.

The previous prime is 25278349. The next prime is 25278389. The reversal of 25278359 is 95387252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25278359 - 2¹⁶ = 25212823 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25278329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12639179 + 12639180.

It is an arithmetic number, because the mean of its divisors is an integer number (12639180).

Almost surely, 2^25278359 is an apocalyptic number.

25278359 is a deficient number, since it is larger than the sum of its proper divisors (1).

25278359 is an equidigital number, since it uses as much as digits as its factorization.

25278359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 25278359 is about 5027.7588446543. The cubic root of 25278359 is about 293.4830062899.

The spelling of 25278359 in words is "twenty-five million, two hundred seventy-eight thousand, three hundred fifty-nine".