266666925 has 24 divisors (see below), whose sum is σ = 503874496. Its totient is φ = 121904640.

The previous prime is 266666909. The next prime is 266666941. The reversal of 266666925 is 529666662.

It is an interprime number because it is at equal distance from previous prime (266666909) and next prime (266666941).

It is not a de Polignac number, because 266666925 - 2⁴ = 266666909 is a prime.

It is a super-2 number, since 2×266666925² = 142222497777911250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253444 + ... + 254493.

Almost surely, 2^266666925 is an apocalyptic number.

266666925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266666925 is a deficient number, since it is larger than the sum of its proper divisors (237207571).

266666925 is a wasteful number, since it uses less digits than its factorization.

266666925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507957 (or 507952 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 266666925 is about 16329.9395283632. The cubic root of 266666925 is about 643.6597975854.

The spelling of 266666925 in words is "two hundred sixty-six million, six hundred sixty-six thousand, nine hundred twenty-five".