25696049 has 2 divisors, whose sum is σ = 25696050. Its totient is φ = 25696048.

The previous prime is 25696031. The next prime is 25696079. The reversal of 25696049 is 94069652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 7480225 = 4268^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 25696049 - 2¹⁶ = 25630513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25695997 and 25696015.

It is not a weakly prime, because it can be changed into another prime (25696079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12848024 + 12848025.

It is an arithmetic number, because the mean of its divisors is an integer number (12848025).

Almost surely, 2^25696049 is an apocalyptic number.

It is an amenable number.

25696049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25696049 is an equidigital number, since it uses as much as digits as its factorization.

25696049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 25696049 is about 5069.1270451627. The cubic root of 25696049 is about 295.0906510645.

The spelling of 25696049 in words is "twenty-five million, six hundred ninety-six thousand, forty-nine".