25775263511 has 2 divisors, whose sum is σ = 25775263512. Its totient is φ = 25775263510.

The previous prime is 25775263499. The next prime is 25775263603. The reversal of 25775263511 is 11536257752.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25775263511 is a prime.

It is a super-2 number, since 2×25775263511² (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 (25775266511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12887631755 + 12887631756.

It is an arithmetic number, because the mean of its divisors is an integer number (12887631756).

Almost surely, 2^25775263511 is an apocalyptic number.

25775263511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25775263511 is an equidigital number, since it uses as much as digits as its factorization.

25775263511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 44.

The spelling of 25775263511 in words is "twenty-five billion, seven hundred seventy-five million, two hundred sixty-three thousand, five hundred eleven".