1266825751055 has 8 divisors (see below), whose sum is σ = 1520740318272. Its totient is φ = 1013094322848.

The previous prime is 1266825750997. The next prime is 1266825751057. The reversal of 1266825751055 is 5501575286621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1266825751055 - 2¹⁰ = 1266825750031 is a prime.

It is a super-2 number, since 2×1266825751055² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1266825750988 and 1266825751006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266825751057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45769532 + ... + 45797201.

It is an arithmetic number, because the mean of its divisors is an integer number (190092539784).

Almost surely, 2^{1266825751055} is an apocalyptic number.

1266825751055 is a deficient number, since it is larger than the sum of its proper divisors (253914567217).

1266825751055 is an equidigital number, since it uses as much as digits as its factorization.

1266825751055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91569505.

The product of its (nonzero) digits is 5040000, while the sum is 53.

The spelling of 1266825751055 in words is "one trillion, two hundred sixty-six billion, eight hundred twenty-five million, seven hundred fifty-one thousand, fifty-five".