25208727487 has 2 divisors, whose sum is σ = 25208727488. Its totient is φ = 25208727486.

The previous prime is 25208727449. The next prime is 25208727499. The reversal of 25208727487 is 78472780252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25208727487 - 2¹¹ = 25208725439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25208727437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12604363743 + 12604363744.

It is an arithmetic number, because the mean of its divisors is an integer number (12604363744).

Almost surely, 2^25208727487 is an apocalyptic number.

25208727487 is a deficient number, since it is larger than the sum of its proper divisors (1).

25208727487 is an equidigital number, since it uses as much as digits as its factorization.

25208727487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3512320, while the sum is 52.

The spelling of 25208727487 in words is "twenty-five billion, two hundred eight million, seven hundred twenty-seven thousand, four hundred eighty-seven".