250005263 has 4 divisors (see below), whose sum is σ = 256762200. Its totient is φ = 243248328.

The previous prime is 250005251. The next prime is 250005269. The reversal of 250005263 is 362500052.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 250005263 - 2¹⁰ = 250004239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250005269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3378413 + ... + 3378486.

It is an arithmetic number, because the mean of its divisors is an integer number (64190550).

Almost surely, 2^250005263 is an apocalyptic number.

250005263 is a deficient number, since it is larger than the sum of its proper divisors (6756937).

250005263 is an equidigital number, since it uses as much as digits as its factorization.

250005263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756936.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 250005263 is about 15811.5547306392. The cubic root of 250005263 is about 629.9649455594.

The spelling of 250005263 in words is "two hundred fifty million, five thousand, two hundred sixty-three".