254420043251209 has 4 divisors (see below), whose sum is σ = 277549138092240. Its totient is φ = 231290948410180.

The previous prime is 254420043251197. The next prime is 254420043251303. The reversal of 254420043251209 is 902152340024452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254420043251209 - 2²⁵ = 254420009696777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254420043251809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11564547420499 + ... + 11564547420520.

It is an arithmetic number, because the mean of its divisors is an integer number (69387284523060).

Almost surely, 2^{254420043251209} is an apocalyptic number.

It is an amenable number.

254420043251209 is a deficient number, since it is larger than the sum of its proper divisors (23129094841031).

254420043251209 is a wasteful number, since it uses less digits than its factorization.

254420043251209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23129094841030.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 254420043251209 in words is "two hundred fifty-four trillion, four hundred twenty billion, forty-three million, two hundred fifty-one thousand, two hundred nine".