1255910690667 has 16 divisors (see below), whose sum is σ = 1802116791072. Its totient is φ = 775103992320.

The previous prime is 1255910690659. The next prime is 1255910690677. The reversal of 1255910690667 is 7660960195521.

It is not a de Polignac number, because 1255910690667 - 2³ = 1255910690659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255910690677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201846888 + ... + 201853109.

It is an arithmetic number, because the mean of its divisors is an integer number (112632299442).

Almost surely, 2^{1255910690667} is an apocalyptic number.

1255910690667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1255910690667 is a deficient number, since it is larger than the sum of its proper divisors (546206100405).

1255910690667 is a wasteful number, since it uses less digits than its factorization.

1255910690667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403700078.

The product of its (nonzero) digits is 6123600, while the sum is 57.

The spelling of 1255910690667 in words is "one trillion, two hundred fifty-five billion, nine hundred ten million, six hundred ninety thousand, six hundred sixty-seven".