266125572 has 18 divisors (see below), whose sum is σ = 672706398. Its totient is φ = 88708512.

The previous prime is 266125553. The next prime is 266125589. The reversal of 266125572 is 275521662.

266125572 is a `hidden beast` number, since 2 + 6 + 61 + 25 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 134931456 + 131194116 = 11616^2 + 11454^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7392377 = 266125572 / (2 + 6 + 6 + 1 + 2 + 5 + 5 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3696153 + ... + 3696224.

Almost surely, 2^266125572 is an apocalyptic number.

It is an amenable number.

266125572 is an abundant number, since it is smaller than the sum of its proper divisors (406580826).

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

266125572 is a wasteful number, since it uses less digits than its factorization.

266125572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392387 (or 7392382 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 266125572 is about 16313.3556327323. The cubic root of 266125572 is about 643.2239439832.

The spelling of 266125572 in words is "two hundred sixty-six million, one hundred twenty-five thousand, five hundred seventy-two".