25945651 has 2 divisors, whose sum is σ = 25945652. Its totient is φ = 25945650.

The previous prime is 25945643. The next prime is 25945687. The reversal of 25945651 is 15654952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25945651 - 2³ = 25945643 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25945651.

It is not a weakly prime, because it can be changed into another prime (25945351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12972825 + 12972826.

It is an arithmetic number, because the mean of its divisors is an integer number (12972826).

Almost surely, 2^25945651 is an apocalyptic number.

25945651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25945651 is an equidigital number, since it uses as much as digits as its factorization.

25945651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 37.

The square root of 25945651 is about 5093.6873677131. The cubic root of 25945651 is about 296.0430414340.

The spelling of 25945651 in words is "twenty-five million, nine hundred forty-five thousand, six hundred fifty-one".