25877279 has 2 divisors, whose sum is σ = 25877280. Its totient is φ = 25877278.

The previous prime is 25877261. The next prime is 25877287. The reversal of 25877279 is 97277852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25877279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25877239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12938639 + 12938640.

It is an arithmetic number, because the mean of its divisors is an integer number (12938640).

Almost surely, 2^25877279 is an apocalyptic number.

25877279 is a deficient number, since it is larger than the sum of its proper divisors (1).

25877279 is an equidigital number, since it uses as much as digits as its factorization.

25877279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 47.

The square root of 25877279 is about 5086.9714958903. The cubic root of 25877279 is about 295.7827683905.

The spelling of 25877279 in words is "twenty-five million, eight hundred seventy-seven thousand, two hundred seventy-nine".