266652625 has 16 divisors (see below), whose sum is σ = 336093264. Its totient is φ = 211200000.

The previous prime is 266652623. The next prime is 266652647. The reversal of 266652625 is 526256662.

It can be written as a sum of positive squares in 8 ways, for example, as 9659664 + 256992961 = 3108^2 + 16031^2 .

It is not a de Polignac number, because 266652625 - 2¹ = 266652623 is a prime.

It is a super-2 number, since 2×266652625² = 142207244838781250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266652623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065 + ... + 23185.

It is an arithmetic number, because the mean of its divisors is an integer number (21005829).

Almost surely, 2^266652625 is an apocalyptic number.

266652625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266652625 is a deficient number, since it is larger than the sum of its proper divisors (69440639).

266652625 is a wasteful number, since it uses less digits than its factorization.

266652625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21237 (or 21227 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 266652625 is about 16329.5016764138. The cubic root of 266652625 is about 643.6482919720.

The spelling of 266652625 in words is "two hundred sixty-six million, six hundred fifty-two thousand, six hundred twenty-five".