1255047191001 has 12 divisors (see below), whose sum is σ = 1919483939412. Its totient is φ = 787480590336.

The previous prime is 1255047190973. The next prime is 1255047191033. The reversal of 1255047191001 is 1001917405521.

1255047191001 is a `hidden beast` number, since 12 + 550 + 4 + 7 + 1 + 91 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1122879315600 + 132167875401 = 1059660^2 + 363549^2 .

It is not a de Polignac number, because 1255047191001 - 2²¹ = 1255045093849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255047191081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4101461256 + ... + 4101461561.

It is an arithmetic number, because the mean of its divisors is an integer number (159956994951).

Almost surely, 2^{1255047191001} is an apocalyptic number.

It is an amenable number.

1255047191001 is a deficient number, since it is larger than the sum of its proper divisors (664436748411).

1255047191001 is a wasteful number, since it uses less digits than its factorization.

1255047191001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8202922840 (or 8202922837 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The spelling of 1255047191001 in words is "one trillion, two hundred fifty-five billion, forty-seven million, one hundred ninety-one thousand, one".