25862827049 has 2 divisors, whose sum is σ = 25862827050. Its totient is φ = 25862827048.

The previous prime is 25862826991. The next prime is 25862827061. The reversal of 25862827049 is 94072826852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19032961600 + 6829865449 = 137960^2 + 82643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25862827049 is a prime.

It is not a weakly prime, because it can be changed into another prime (25862827349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931413524 + 12931413525.

It is an arithmetic number, because the mean of its divisors is an integer number (12931413525).

Almost surely, 2^25862827049 is an apocalyptic number.

It is an amenable number.

25862827049 is a deficient number, since it is larger than the sum of its proper divisors (1).

25862827049 is an equidigital number, since it uses as much as digits as its factorization.

25862827049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 25862827049 in words is "twenty-five billion, eight hundred sixty-two million, eight hundred twenty-seven thousand, forty-nine".