25311250511 has 2 divisors, whose sum is σ = 25311250512. Its totient is φ = 25311250510.

The previous prime is 25311250499. The next prime is 25311250529. The reversal of 25311250511 is 11505211352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25311250511 - 2¹⁴ = 25311234127 is a prime.

It is a super-2 number, since 2×25311250511² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25311250571) 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, 12655625255 + 12655625256.

It is an arithmetic number, because the mean of its divisors is an integer number (12655625256).

Almost surely, 2^25311250511 is an apocalyptic number.

25311250511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25311250511 is an equidigital number, since it uses as much as digits as its factorization.

25311250511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 25311250511 its reverse (11505211352), we get a palindrome (36816461863).

The spelling of 25311250511 in words is "twenty-five billion, three hundred eleven million, two hundred fifty thousand, five hundred eleven".