254256470651 has 4 divisors (see below), whose sum is σ = 255547112832. Its totient is φ = 252965828472.

The previous prime is 254256470641. The next prime is 254256470669. The reversal of 254256470651 is 156074652452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254256470651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254256470596 and 254256470605.

It is not an unprimeable number, because it can be changed into a prime (254256470641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645320795 + ... + 645321188.

It is an arithmetic number, because the mean of its divisors is an integer number (63886778208).

Almost surely, 2^254256470651 is an apocalyptic number.

254256470651 is a deficient number, since it is larger than the sum of its proper divisors (1290642181).

254256470651 is a wasteful number, since it uses less digits than its factorization.

254256470651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290642180.

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 254256470651 in words is "two hundred fifty-four billion, two hundred fifty-six million, four hundred seventy thousand, six hundred fifty-one".