250020135 has 32 divisors (see below), whose sum is σ = 449496000. Its totient is φ = 131839488.

The previous prime is 250020101. The next prime is 250020149. The reversal of 250020135 is 531020052.

It is a happy number.

250020135 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 250020135 - 2⁷ = 250020007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611 + ... + 22419.

It is an arithmetic number, because the mean of its divisors is an integer number (14046750).

Almost surely, 2^250020135 is an apocalyptic number.

250020135 is a deficient number, since it is larger than the sum of its proper divisors (199475865).

250020135 is a wasteful number, since it uses less digits than its factorization.

250020135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912 (or 20906 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 250020135 is about 15812.0250126288. The cubic root of 250020135 is about 629.9774368336.

Adding to 250020135 its reverse (531020052), we get a palindrome (781040187).

The spelling of 250020135 in words is "two hundred fifty million, twenty thousand, one hundred thirty-five".