250000133 has 4 divisors (see below), whose sum is σ = 260869728. Its totient is φ = 239130540.

The previous prime is 250000129. The next prime is 250000139. The reversal of 250000133 is 331000052.

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 not a de Polignac number, because 250000133 - 2² = 250000129 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 (250000139) 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, 5434763 + ... + 5434808.

It is an arithmetic number, because the mean of its divisors is an integer number (65217432).

Almost surely, 2^250000133 is an apocalyptic number.

250000133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

250000133 is a deficient number, since it is larger than the sum of its proper divisors (10869595).

250000133 is a wasteful number, since it uses less digits than its factorization.

250000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10869594.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 250000133 is about 15811.3925066706. The cubic root of 250000133 is about 629.9606366604.

Adding to 250000133 its reverse (331000052), we get a palindrome (581000185).

The spelling of 250000133 in words is "two hundred fifty million, one hundred thirty-three", and thus it is an aban number.