25682065477 has 2 divisors, whose sum is σ = 25682065478. Its totient is φ = 25682065476.

The previous prime is 25682065459. The next prime is 25682065501. The reversal of 25682065477 is 77456028652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21316292001 + 4365773476 = 146001^2 + 66074^2 .

It is a cyclic number.

It is not a de Polignac number, because 25682065477 - 2²⁷ = 25547847749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25682065447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12841032738 + 12841032739.

It is an arithmetic number, because the mean of its divisors is an integer number (12841032739).

Almost surely, 2^25682065477 is an apocalyptic number.

It is an amenable number.

25682065477 is a deficient number, since it is larger than the sum of its proper divisors (1).

25682065477 is an equidigital number, since it uses as much as digits as its factorization.

25682065477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 25682065477 in words is "twenty-five billion, six hundred eighty-two million, sixty-five thousand, four hundred seventy-seven".