25949767 has 2 divisors, whose sum is σ = 25949768. Its totient is φ = 25949766.

The previous prime is 25949743. The next prime is 25949779. The reversal of 25949767 is 76794952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25949767 - 2⁷ = 25949639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25949767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25949797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12974883 + 12974884.

It is an arithmetic number, because the mean of its divisors is an integer number (12974884).

Almost surely, 2^25949767 is an apocalyptic number.

25949767 is a deficient number, since it is larger than the sum of its proper divisors (1).

25949767 is an equidigital number, since it uses as much as digits as its factorization.

25949767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 25949767 is about 5094.0913811984. The cubic root of 25949767 is about 296.0586952935.

The spelling of 25949767 in words is "twenty-five million, nine hundred forty-nine thousand, seven hundred sixty-seven".