254402145204049 has 2 divisors, whose sum is σ = 254402145204050. Its totient is φ = 254402145204048.

The previous prime is 254402145204029. The next prime is 254402145204083. The reversal of 254402145204049 is 940402541204452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211065834891025 + 43336310313024 = 14528105^2 + 6583032^2 .

It is a cyclic number.

It is not a de Polignac number, because 254402145204049 - 2⁵ = 254402145204017 is a prime.

It is a super-2 number, since 2×254402145204049² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254402145204029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127201072602024 + 127201072602025.

It is an arithmetic number, because the mean of its divisors is an integer number (127201072602025).

Almost surely, 2^{254402145204049} is an apocalyptic number.

It is an amenable number.

254402145204049 is a deficient number, since it is larger than the sum of its proper divisors (1).

254402145204049 is an equidigital number, since it uses as much as digits as its factorization.

254402145204049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 254402145204049 in words is "two hundred fifty-four trillion, four hundred two billion, one hundred forty-five million, two hundred four thousand, forty-nine".