2557960789 has 2 divisors, whose sum is σ = 2557960790. Its totient is φ = 2557960788.

The previous prime is 2557960787. The next prime is 2557960817. The reversal of 2557960789 is 9870697552.

2557960789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2045300625 + 512660164 = 45225^2 + 22642^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557960789 - 2¹ = 2557960787 is a prime.

Together with 2557960787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557960787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278980394 + 1278980395.

It is an arithmetic number, because the mean of its divisors is an integer number (1278980395).

Almost surely, 2^2557960789 is an apocalyptic number.

It is an amenable number.

2557960789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557960789 is an equidigital number, since it uses as much as digits as its factorization.

2557960789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9525600, while the sum is 58.

The square root of 2557960789 is about 50576.2868249538. The cubic root of 2557960789 is about 1367.6174315032.

It can be divided in two parts, 25579 and 60789, that added together give a palindrome (86368).

The spelling of 2557960789 in words is "two billion, five hundred fifty-seven million, nine hundred sixty thousand, seven hundred eighty-nine".