254253663 has 12 divisors (see below), whose sum is σ = 370892808. Its totient is φ = 167823600.

The previous prime is 254253647. The next prime is 254253719. The reversal of 254253663 is 366352452.

254253663 is a `hidden beast` number, since 2 + 542 + 53 + 6 + 63 = 666.

It is not a de Polignac number, because 254253663 - 2⁴ = 254253647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254253613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138945 + ... + 140762.

It is an arithmetic number, because the mean of its divisors is an integer number (30907734).

Almost surely, 2^254253663 is an apocalyptic number.

254253663 is a deficient number, since it is larger than the sum of its proper divisors (116639145).

254253663 is a wasteful number, since it uses less digits than its factorization.

254253663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279814 (or 279811 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 254253663 is about 15945.3335807063. Note that the first 3 decimals coincide. The cubic root of 254253663 is about 633.5133037633.

The spelling of 254253663 in words is "two hundred fifty-four million, two hundred fifty-three thousand, six hundred sixty-three".