252666259 has 4 divisors (see below), whose sum is σ = 253723680. Its totient is φ = 251608840.

The previous prime is 252666221. The next prime is 252666287. The reversal of 252666259 is 952666252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252666259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252666059) 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, 528352 + ... + 528829.

It is an arithmetic number, because the mean of its divisors is an integer number (63430920).

Almost surely, 2^252666259 is an apocalyptic number.

252666259 is a deficient number, since it is larger than the sum of its proper divisors (1057421).

252666259 is a wasteful number, since it uses less digits than its factorization.

252666259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057420.

The product of its digits is 388800, while the sum is 43.

The square root of 252666259 is about 15895.4792000745. The cubic root of 252666259 is about 632.1921275019.

The spelling of 252666259 in words is "two hundred fifty-two million, six hundred sixty-six thousand, two hundred fifty-nine".