25393967 has 2 divisors, whose sum is σ = 25393968. Its totient is φ = 25393966.

The previous prime is 25393939. The next prime is 25393969. The reversal of 25393967 is 76939352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25393967 - 2¹⁶ = 25328431 is a prime.

Together with 25393969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25393969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12696983 + 12696984.

It is an arithmetic number, because the mean of its divisors is an integer number (12696984).

Almost surely, 2^25393967 is an apocalyptic number.

25393967 is a deficient number, since it is larger than the sum of its proper divisors (1).

25393967 is an equidigital number, since it uses as much as digits as its factorization.

25393967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 44.

The square root of 25393967 is about 5039.2427010415. The cubic root of 25393967 is about 293.9297308423.

The spelling of 25393967 in words is "twenty-five million, three hundred ninety-three thousand, nine hundred sixty-seven".