25513038911 has 2 divisors, whose sum is σ = 25513038912. Its totient is φ = 25513038910.

The previous prime is 25513038883. The next prime is 25513038917. The reversal of 25513038911 is 11983031552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25513038911 - 2¹⁰ = 25513037887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25513038917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12756519455 + 12756519456.

It is an arithmetic number, because the mean of its divisors is an integer number (12756519456).

Almost surely, 2^25513038911 is an apocalyptic number.

25513038911 is a deficient number, since it is larger than the sum of its proper divisors (1).

25513038911 is an equidigital number, since it uses as much as digits as its factorization.

25513038911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 25513038911 in words is "twenty-five billion, five hundred thirteen million, thirty-eight thousand, nine hundred eleven".