1206505025055 has 48 divisors (see below), whose sum is σ = 2282933147040. Its totient is φ = 584576793600.

The previous prime is 1206505025021. The next prime is 1206505025057. The reversal of 1206505025055 is 5505205056021.

1206505025055 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 50 + 502 + 50 + 55 = 666.

It is not a de Polignac number, because 1206505025055 - 2³⁷ = 1069066071583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206505025057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89790 + ... + 1555979.

It is an arithmetic number, because the mean of its divisors is an integer number (47561107230).

Almost surely, 2^{1206505025055} is an apocalyptic number.

1206505025055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1206505025055 is a deficient number, since it is larger than the sum of its proper divisors (1076428121985).

1206505025055 is a wasteful number, since it uses less digits than its factorization.

1206505025055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647272 (or 1647269 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 1206505025055 in words is "one trillion, two hundred six billion, five hundred five million, twenty-five thousand, fifty-five".