2500277775161 has 2 divisors, whose sum is σ = 2500277775162. Its totient is φ = 2500277775160.

The previous prime is 2500277775139. The next prime is 2500277775253. The reversal of 2500277775161 is 1615777720052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2447522575936 + 52755199225 = 1564456^2 + 229685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500277775161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2500277775361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250138887580 + 1250138887581.

It is an arithmetic number, because the mean of its divisors is an integer number (1250138887581).

Almost surely, 2^{2500277775161} is an apocalyptic number.

It is an amenable number.

2500277775161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500277775161 is an equidigital number, since it uses as much as digits as its factorization.

2500277775161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440600, while the sum is 50.

The spelling of 2500277775161 in words is "two trillion, five hundred billion, two hundred seventy-seven million, seven hundred seventy-five thousand, one hundred sixty-one".