266025204081 has 24 divisors (see below), whose sum is σ = 472933697600. Its totient is φ = 140320986336.

The previous prime is 266025204077. The next prime is 266025204101. The reversal of 266025204081 is 180402520662.

It is a happy number.

266025204081 is a `hidden beast` number, since 2 + 6 + 602 + 5 + 2 + 0 + 40 + 8 + 1 = 666.

It is not a de Polignac number, because 266025204081 - 2² = 266025204077 is a prime.

It is a super-2 number, since 2×266025204081² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266025204031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162407731 + ... + 162409368.

Almost surely, 2^266025204081 is an apocalyptic number.

266025204081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

266025204081 is a deficient number, since it is larger than the sum of its proper divisors (206908493519).

266025204081 is a wasteful number, since it uses less digits than its factorization.

266025204081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324817125 (or 324817122 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 266025204081 in words is "two hundred sixty-six billion, twenty-five million, two hundred four thousand, eighty-one".