250505239 has 2 divisors, whose sum is σ = 250505240. Its totient is φ = 250505238.

The previous prime is 250505153. The next prime is 250505249. The reversal of 250505239 is 932505052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 250505239 - 2¹¹ = 250503191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250505239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250505249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125252619 + 125252620.

It is an arithmetic number, because the mean of its divisors is an integer number (125252620).

Almost surely, 2^250505239 is an apocalyptic number.

250505239 is a deficient number, since it is larger than the sum of its proper divisors (1).

250505239 is an equidigital number, since it uses as much as digits as its factorization.

250505239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 250505239 is about 15827.3572967820. The cubic root of 250505239 is about 630.3846135550.

The spelling of 250505239 in words is "two hundred fifty million, five hundred five thousand, two hundred thirty-nine".