266662015725 has 96 divisors (see below), whose sum is σ = 540812885760. Its totient is φ = 113159946240.

The previous prime is 266662015667. The next prime is 266662015729. The reversal of 266662015725 is 527510266662.

It is not a de Polignac number, because 266662015725 - 2²⁵ = 266628461293 is a prime.

It is a super-2 number, since 2×266662015725² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266662015729) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 446881 + ... + 856169.

It is an arithmetic number, because the mean of its divisors is an integer number (5633467560).

Almost surely, 2^266662015725 is an apocalyptic number.

266662015725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266662015725 is an abundant number, since it is smaller than the sum of its proper divisors (274150870035).

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

266662015725 is a wasteful number, since it uses less digits than its factorization.

266662015725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409399 (or 409394 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 266662015725 in words is "two hundred sixty-six billion, six hundred sixty-two million, fifteen thousand, seven hundred twenty-five".