266986425 has 24 divisors (see below), whose sum is σ = 447015040. Its totient is φ = 140587200.

The previous prime is 266986409. The next prime is 266986427. The reversal of 266986425 is 524689662.

It is a happy number.

It is not a de Polignac number, because 266986425 - 2⁴ = 266986409 is a prime.

It is a super-2 number, since 2×266986425² = 142563502268561250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266986427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16606 + ... + 28455.

Almost surely, 2^266986425 is an apocalyptic number.

266986425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266986425 is a deficient number, since it is larger than the sum of its proper divisors (180028615).

266986425 is a wasteful number, since it uses less digits than its factorization.

266986425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45153 (or 45148 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 266986425 is about 16339.7192448340. The cubic root of 266986425 is about 643.9167563726.

The spelling of 266986425 in words is "two hundred sixty-six million, nine hundred eighty-six thousand, four hundred twenty-five".