254695253891 has 16 divisors (see below), whose sum is σ = 278828195520. Its totient is φ = 231212257920.

The previous prime is 254695253881. The next prime is 254695253909. The reversal of 254695253891 is 198352596452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254695253891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254695253891.

It is not an unprimeable number, because it can be changed into a prime (254695253881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5774066 + ... + 5818008.

It is an arithmetic number, because the mean of its divisors is an integer number (17426762220).

Almost surely, 2^254695253891 is an apocalyptic number.

254695253891 is a deficient number, since it is larger than the sum of its proper divisors (24132941629).

254695253891 is a wasteful number, since it uses less digits than its factorization.

254695253891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51326.

The product of its digits is 23328000, while the sum is 59.

The spelling of 254695253891 in words is "two hundred fifty-four billion, six hundred ninety-five million, two hundred fifty-three thousand, eight hundred ninety-one".