266125650 has 144 divisors (see below), whose sum is σ = 802168896. Its totient is φ = 57185280.

The previous prime is 266125637. The next prime is 266125681. The reversal of 266125650 is 56521662.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 303012 + ... + 303888.

Almost surely, 2^266125650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266125650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401084448).

266125650 is an abundant number, since it is smaller than the sum of its proper divisors (536043246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266125650 is a wasteful number, since it uses less digits than its factorization.

266125650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 266125650 is about 16313.3580234114. The cubic root of 266125650 is about 643.2240068250.

The spelling of 266125650 in words is "two hundred sixty-six million, one hundred twenty-five thousand, six hundred fifty".