25816951 has 2 divisors, whose sum is σ = 25816952. Its totient is φ = 25816950.

The previous prime is 25816927. The next prime is 25816979. The reversal of 25816951 is 15961852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25816951 - 2⁵ = 25816919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25816951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25816981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908475 + 12908476.

It is an arithmetic number, because the mean of its divisors is an integer number (12908476).

Almost surely, 2^25816951 is an apocalyptic number.

25816951 is a deficient number, since it is larger than the sum of its proper divisors (1).

25816951 is an equidigital number, since it uses as much as digits as its factorization.

25816951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 37.

The square root of 25816951 is about 5081.0383781271. The cubic root of 25816951 is about 295.5527356081.

The spelling of 25816951 in words is "twenty-five million, eight hundred sixteen thousand, nine hundred fifty-one".