25277527524989 has 2 divisors, whose sum is σ = 25277527524990. Its totient is φ = 25277527524988.

The previous prime is 25277527524971. The next prime is 25277527525043. The reversal of 25277527524989 is 98942572577252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16770581136100 + 8506946388889 = 4095190^2 + 2916667^2 .

It is a cyclic number.

It is not a de Polignac number, because 25277527524989 - 2¹⁶ = 25277527459453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25277527520989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12638763762494 + 12638763762495.

It is an arithmetic number, because the mean of its divisors is an integer number (12638763762495).

Almost surely, 2^{25277527524989} is an apocalyptic number.

It is an amenable number.

25277527524989 is a deficient number, since it is larger than the sum of its proper divisors (1).

25277527524989 is an equidigital number, since it uses as much as digits as its factorization.

25277527524989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112000, while the sum is 74.

The spelling of 25277527524989 in words is "twenty-five trillion, two hundred seventy-seven billion, five hundred twenty-seven million, five hundred twenty-four thousand, nine hundred eighty-nine".