266151650625 has 120 divisors (see below), whose sum is σ = 567960444480. Its totient is φ = 117473328000.

The previous prime is 266151650617. The next prime is 266151650657. The reversal of 266151650625 is 526056151662.

266151650625 is a `hidden beast` number, since 2 + 6 + 6 + 1 + 5 + 16 + 5 + 0 + 625 = 666.

It is not a de Polignac number, because 266151650625 - 2³ = 266151650617 is a prime.

It is a super-2 number, since 2×266151650625² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1025334 + ... + 1258416.

It is an arithmetic number, because the mean of its divisors is an integer number (4733003704).

Almost surely, 2^266151650625 is an apocalyptic number.

266151650625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

266151650625 is an abundant number, since it is smaller than the sum of its proper divisors (301808793855).

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

266151650625 is a wasteful number, since it uses less digits than its factorization.

266151650625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233145 (or 233127 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 266151650625 in words is "two hundred sixty-six billion, one hundred fifty-one million, six hundred fifty thousand, six hundred twenty-five".