2505105987077 has 2 divisors, whose sum is σ = 2505105987078. Its totient is φ = 2505105987076.

The previous prime is 2505105987061. The next prime is 2505105987101. The reversal of 2505105987077 is 7707895015052.

2505105987077 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., 2102178112321 + 402927874756 = 1449889^2 + 634766^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505105987077 - 2⁴ = 2505105987061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2505105987677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252552993538 + 1252552993539.

It is an arithmetic number, because the mean of its divisors is an integer number (1252552993539).

Almost surely, 2^{2505105987077} is an apocalyptic number.

It is an amenable number.

2505105987077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505105987077 is an equidigital number, since it uses as much as digits as its factorization.

2505105987077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174000, while the sum is 56.

The spelling of 2505105987077 in words is "two trillion, five hundred five billion, one hundred five million, nine hundred eighty-seven thousand, seventy-seven".