254874674909 has 2 divisors, whose sum is σ = 254874674910. Its totient is φ = 254874674908.

The previous prime is 254874674851. The next prime is 254874674911. The reversal of 254874674909 is 909476478452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144768835225 + 110105839684 = 380485^2 + 331822^2 .

It is a cyclic number.

It is not a de Polignac number, because 254874674909 - 2⁸ = 254874674653 is a prime.

It is a super-4 number, since 4×254874674909⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 254874674911, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254874674969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127437337454 + 127437337455.

It is an arithmetic number, because the mean of its divisors is an integer number (127437337455).

Almost surely, 2^254874674909 is an apocalyptic number.

It is an amenable number.

254874674909 is a deficient number, since it is larger than the sum of its proper divisors (1).

254874674909 is an equidigital number, since it uses as much as digits as its factorization.

254874674909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 65.

The spelling of 254874674909 in words is "two hundred fifty-four billion, eight hundred seventy-four million, six hundred seventy-four thousand, nine hundred nine".