254805251 has 2 divisors, whose sum is σ = 254805252. Its totient is φ = 254805250.

The previous prime is 254805241. The next prime is 254805253. The reversal of 254805251 is 152508452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254805251 is a prime.

Together with 254805253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (254805253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127402625 + 127402626.

It is an arithmetic number, because the mean of its divisors is an integer number (127402626).

Almost surely, 2^254805251 is an apocalyptic number.

254805251 is a deficient number, since it is larger than the sum of its proper divisors (1).

254805251 is an equidigital number, since it uses as much as digits as its factorization.

254805251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 254805251 is about 15962.6204302426. The cubic root of 254805251 is about 633.9710958505.

The spelling of 254805251 in words is "two hundred fifty-four million, eight hundred five thousand, two hundred fifty-one".