266053725 has 72 divisors (see below), whose sum is σ = 547589952. Its totient is φ = 120960000.

The previous prime is 266053691. The next prime is 266053729. The reversal of 266053725 is 527350662.

It is a happy number.

266053725 is a `hidden beast` number, since 26 + 605 + 3 + 7 + 25 = 666.

It is not a de Polignac number, because 266053725 - 2⁶ = 266053661 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 266053725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266053729) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 394989 + ... + 395661.

It is an arithmetic number, because the mean of its divisors is an integer number (7605416).

Almost surely, 2^266053725 is an apocalyptic number.

266053725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266053725 is an abundant number, since it is smaller than the sum of its proper divisors (281536227).

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

266053725 is a wasteful number, since it uses less digits than its factorization.

266053725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 266053725 is about 16311.1533926942. The cubic root of 266053725 is about 643.1660541810.

The spelling of 266053725 in words is "two hundred sixty-six million, fifty-three thousand, seven hundred twenty-five".