25951907 has 2 divisors, whose sum is σ = 25951908. Its totient is φ = 25951906.

The previous prime is 25951879. The next prime is 25951909. The reversal of 25951907 is 70915952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25951907 is a prime.

Together with 25951909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25951909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12975953 + 12975954.

It is an arithmetic number, because the mean of its divisors is an integer number (12975954).

Almost surely, 2^25951907 is an apocalyptic number.

25951907 is a deficient number, since it is larger than the sum of its proper divisors (1).

25951907 is an equidigital number, since it uses as much as digits as its factorization.

25951907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 25951907 is about 5094.3014241405. The cubic root of 25951907 is about 296.0668334295.

The spelling of 25951907 in words is "twenty-five million, nine hundred fifty-one thousand, nine hundred seven".