250254773081 has 2 divisors, whose sum is σ = 250254773082. Its totient is φ = 250254773080.

The previous prime is 250254773077. The next prime is 250254773101. The reversal of 250254773081 is 180377452052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193124212681 + 57130560400 = 439459^2 + 239020^2 .

It is a cyclic number.

It is not a de Polignac number, because 250254773081 - 2² = 250254773077 is a prime.

It is a super-2 number, since 2×250254773081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (250254773581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125127386540 + 125127386541.

It is an arithmetic number, because the mean of its divisors is an integer number (125127386541).

Almost surely, 2^250254773081 is an apocalyptic number.

It is an amenable number.

250254773081 is a deficient number, since it is larger than the sum of its proper divisors (1).

250254773081 is an equidigital number, since it uses as much as digits as its factorization.

250254773081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 250254773081 in words is "two hundred fifty billion, two hundred fifty-four million, seven hundred seventy-three thousand, eighty-one".