25498855788767 has 2 divisors, whose sum is σ = 25498855788768. Its totient is φ = 25498855788766.

The previous prime is 25498855788733. The next prime is 25498855788773. The reversal of 25498855788767 is 76788755889452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25498855788767 - 2¹² = 25498855784671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25498855788797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12749427894383 + 12749427894384.

It is an arithmetic number, because the mean of its divisors is an integer number (12749427894384).

Almost surely, 2^{25498855788767} is an apocalyptic number.

25498855788767 is a deficient number, since it is larger than the sum of its proper divisors (1).

25498855788767 is an equidigital number, since it uses as much as digits as its factorization.

25498855788767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75866112000, while the sum is 89.

The spelling of 25498855788767 in words is "twenty-five trillion, four hundred ninety-eight billion, eight hundred fifty-five million, seven hundred eighty-eight thousand, seven hundred sixty-seven".