1255681067 has 4 divisors (see below), whose sum is σ = 1310275920. Its totient is φ = 1201086216.

The previous prime is 1255681039. The next prime is 1255681073. The reversal of 1255681067 is 7601865521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7601865521 = 21193 ⋅358697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255681067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255681267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27297392 + ... + 27297437.

It is an arithmetic number, because the mean of its divisors is an integer number (327568980).

Almost surely, 2^1255681067 is an apocalyptic number.

1255681067 is a deficient number, since it is larger than the sum of its proper divisors (54594853).

1255681067 is an equidigital number, since it uses as much as digits as its factorization.

1255681067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54594852.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 1255681067 is about 35435.5904000484. The cubic root of 1255681067 is about 1078.8468106520.

The spelling of 1255681067 in words is "one billion, two hundred fifty-five million, six hundred eighty-one thousand, sixty-seven".