2525780557813 has 2 divisors, whose sum is σ = 2525780557814. Its totient is φ = 2525780557812.

The previous prime is 2525780557801. The next prime is 2525780557823. The reversal of 2525780557813 is 3187550875252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1538177894289 + 987602663524 = 1240233^2 + 993782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2525780557813 is a prime.

It is a super-2 number, since 2×2525780557813² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2525780557823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262890278906 + 1262890278907.

It is an arithmetic number, because the mean of its divisors is an integer number (1262890278907).

Almost surely, 2^{2525780557813} is an apocalyptic number.

It is an amenable number.

2525780557813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2525780557813 is an equidigital number, since it uses as much as digits as its factorization.

2525780557813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520000, while the sum is 58.

The spelling of 2525780557813 in words is "two trillion, five hundred twenty-five billion, seven hundred eighty million, five hundred fifty-seven thousand, eight hundred thirteen".