25980838497 has 6 divisors (see below), whose sum is σ = 37527877842. Its totient is φ = 17320558992.

The previous prime is 25980838463. The next prime is 25980838501. The reversal of 25980838497 is 79483808952.

25980838497 is a `hidden beast` number, since 2 + 598 + 0 + 8 + 38 + 4 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18413404416 + 7567434081 = 135696^2 + 86991^2 .

It is not a de Polignac number, because 25980838497 - 2¹⁴ = 25980822113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25980838397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1443379908 + ... + 1443379925.

It is an arithmetic number, because the mean of its divisors is an integer number (6254646307).

Almost surely, 2^25980838497 is an apocalyptic number.

It is an amenable number.

25980838497 is a deficient number, since it is larger than the sum of its proper divisors (11547039345).

25980838497 is a wasteful number, since it uses less digits than its factorization.

25980838497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886759839 (or 2886759836 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 25980838497 in words is "twenty-five billion, nine hundred eighty million, eight hundred thirty-eight thousand, four hundred ninety-seven".