250135009 has 4 divisors (see below), whose sum is σ = 252104704. Its totient is φ = 248165316.

The previous prime is 250134977. The next prime is 250135013. The reversal of 250135009 is 900531052.

250135009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 250135009 - 2⁵ = 250134977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250135049) 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, 984657 + ... + 984910.

It is an arithmetic number, because the mean of its divisors is an integer number (63026176).

Almost surely, 2^250135009 is an apocalyptic number.

It is an amenable number.

250135009 is a deficient number, since it is larger than the sum of its proper divisors (1969695).

250135009 is a wasteful number, since it uses less digits than its factorization.

250135009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969694.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 250135009 is about 15815.6570840418. The cubic root of 250135009 is about 630.0739049941.

The spelling of 250135009 in words is "two hundred fifty million, one hundred thirty-five thousand, nine".