25261043207 has 2 divisors, whose sum is σ = 25261043208. Its totient is φ = 25261043206.

The previous prime is 25261043201. The next prime is 25261043233. The reversal of 25261043207 is 70234016252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25261043207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25261043201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630521603 + 12630521604.

It is an arithmetic number, because the mean of its divisors is an integer number (12630521604).

Almost surely, 2^25261043207 is an apocalyptic number.

25261043207 is a deficient number, since it is larger than the sum of its proper divisors (1).

25261043207 is an equidigital number, since it uses as much as digits as its factorization.

25261043207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 25261043207 its reverse (70234016252), we get a palindrome (95495059459).

The spelling of 25261043207 in words is "twenty-five billion, two hundred sixty-one million, forty-three thousand, two hundred seven".