250135729 has 2 divisors, whose sum is σ = 250135730. Its totient is φ = 250135728.

The previous prime is 250135681. The next prime is 250135757. The reversal of 250135729 is 927531052.

250135729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224400400 + 25735329 = 14980^2 + 5073^2 .

It is a cyclic number.

It is not a de Polignac number, because 250135729 - 2²⁷ = 115918001 is a prime.

It is a super-2 number, since 2×250135729² = 125135765844722882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 250135694 and 250135703.

It is not a weakly prime, because it can be changed into another prime (250135829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125067864 + 125067865.

It is an arithmetic number, because the mean of its divisors is an integer number (125067865).

Almost surely, 2^250135729 is an apocalyptic number.

It is an amenable number.

250135729 is a deficient number, since it is larger than the sum of its proper divisors (1).

250135729 is an equidigital number, since it uses as much as digits as its factorization.

250135729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 250135729 is about 15815.6798462791. The cubic root of 250135729 is about 630.0745095380.

The spelling of 250135729 in words is "two hundred fifty million, one hundred thirty-five thousand, seven hundred twenty-nine".