25071787511 has 2 divisors, whose sum is σ = 25071787512. Its totient is φ = 25071787510.

The previous prime is 25071787441. The next prime is 25071787547. The reversal of 25071787511 is 11578717052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25071787511 - 2³⁴ = 7891918327 is a prime.

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 (25071787591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12535893755 + 12535893756.

It is an arithmetic number, because the mean of its divisors is an integer number (12535893756).

Almost surely, 2^25071787511 is an apocalyptic number.

25071787511 is a deficient number, since it is larger than the sum of its proper divisors (1).

25071787511 is an equidigital number, since it uses as much as digits as its factorization.

25071787511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137200, while the sum is 44.

The spelling of 25071787511 in words is "twenty-five billion, seventy-one million, seven hundred eighty-seven thousand, five hundred eleven".