266525365248 has 440 divisors, whose sum is σ = 818555997600. Its totient is φ = 86349791232.

The previous prime is 266525365243. The next prime is 266525365261. The reversal of 266525365248 is 842563525662.

266525365248 is a `hidden beast` number, since 2 + 6 + 6 + 52 + 536 + 52 + 4 + 8 = 666.

It is a super-2 number, since 2×266525365248² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 266525365194 and 266525365203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266525365241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 523625218 + ... + 523625726.

It is an arithmetic number, because the mean of its divisors is an integer number (1860354540).

Almost surely, 2^266525365248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266525365248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409277998800).

266525365248 is an abundant number, since it is smaller than the sum of its proper divisors (552030632352).

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

266525365248 is a wasteful number, since it uses less digits than its factorization.

266525365248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 680 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 266525365248 in words is "two hundred sixty-six billion, five hundred twenty-five million, three hundred sixty-five thousand, two hundred forty-eight".