25505052802997 has 2 divisors, whose sum is σ = 25505052802998. Its totient is φ = 25505052802996.

The previous prime is 25505052802993. The next prime is 25505052803033. The reversal of 25505052802997 is 79920825050552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15990289473796 + 9514763329201 = 3998786^2 + 3084601^2 .

It is a cyclic number.

It is not a de Polignac number, because 25505052802997 - 2² = 25505052802993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25505052802993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752526401498 + 12752526401499.

It is an arithmetic number, because the mean of its divisors is an integer number (12752526401499).

Almost surely, 2^{25505052802997} is an apocalyptic number.

It is an amenable number.

25505052802997 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505052802997 is an equidigital number, since it uses as much as digits as its factorization.

25505052802997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680000, while the sum is 59.

The spelling of 25505052802997 in words is "twenty-five trillion, five hundred five billion, fifty-two million, eight hundred two thousand, nine hundred ninety-seven".