25507134727 has 2 divisors, whose sum is σ = 25507134728. Its totient is φ = 25507134726.

The previous prime is 25507134641. The next prime is 25507134743. The reversal of 25507134727 is 72743170552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25507134727 is a prime.

It is a super-2 number, since 2×25507134727² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25507134227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753567363 + 12753567364.

It is an arithmetic number, because the mean of its divisors is an integer number (12753567364).

Almost surely, 2^25507134727 is an apocalyptic number.

25507134727 is a deficient number, since it is larger than the sum of its proper divisors (1).

25507134727 is an equidigital number, since it uses as much as digits as its factorization.

25507134727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 411600, while the sum is 43.

The spelling of 25507134727 in words is "twenty-five billion, five hundred seven million, one hundred thirty-four thousand, seven hundred twenty-seven".