25305055487 has 2 divisors, whose sum is σ = 25305055488. Its totient is φ = 25305055486.

The previous prime is 25305055439. The next prime is 25305055493. The reversal of 25305055487 is 78455050352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25305055487 - 2¹⁴ = 25305039103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25305055417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652527743 + 12652527744.

It is an arithmetic number, because the mean of its divisors is an integer number (12652527744).

Almost surely, 2^25305055487 is an apocalyptic number.

25305055487 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305055487 is an equidigital number, since it uses as much as digits as its factorization.

25305055487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 25305055487 in words is "twenty-five billion, three hundred five million, fifty-five thousand, four hundred eighty-seven".