252666145 has 16 divisors (see below), whose sum is σ = 307126080. Its totient is φ = 199528000.

The previous prime is 252666133. The next prime is 252666181. The reversal of 252666145 is 541666252.

It is not a de Polignac number, because 252666145 - 2²⁵ = 219111713 is a prime.

It is a super-2 number, since 2×252666145² = 127680361658322050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247446 + ... + 248464.

It is an arithmetic number, because the mean of its divisors is an integer number (19195380).

Almost surely, 2^252666145 is an apocalyptic number.

It is an amenable number.

252666145 is a deficient number, since it is larger than the sum of its proper divisors (54459935).

252666145 is a wasteful number, since it uses less digits than its factorization.

252666145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616.

The product of its digits is 86400, while the sum is 37.

The square root of 252666145 is about 15895.4756141488. The cubic root of 252666145 is about 632.1920324227.

The spelling of 252666145 in words is "two hundred fifty-two million, six hundred sixty-six thousand, one hundred forty-five".