250287798161 has 2 divisors, whose sum is σ = 250287798162. Its totient is φ = 250287798160.

The previous prime is 250287798151. The next prime is 250287798197. The reversal of 250287798161 is 161897782052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212100775936 + 38187022225 = 460544^2 + 195415^2 .

It is a cyclic number.

It is not a de Polignac number, because 250287798161 - 2¹⁸ = 250287536017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 250287798097 and 250287798106.

It is not a weakly prime, because it can be changed into another prime (250287798151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125143899080 + 125143899081.

It is an arithmetic number, because the mean of its divisors is an integer number (125143899081).

Almost surely, 2^250287798161 is an apocalyptic number.

It is an amenable number.

250287798161 is a deficient number, since it is larger than the sum of its proper divisors (1).

250287798161 is an equidigital number, since it uses as much as digits as its factorization.

250287798161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 250287798161 in words is "two hundred fifty billion, two hundred eighty-seven million, seven hundred ninety-eight thousand, one hundred sixty-one".