1255072181 has 16 divisors (see below), whose sum is σ = 1378460160. Its totient is φ = 1133264880.

The previous prime is 1255072163. The next prime is 1255072219. The reversal of 1255072181 is 1812705521.

It is not a de Polignac number, because 1255072181 - 2²² = 1250877877 is a prime.

It is a super-2 number, since 2×1255072181² = 3150412359040193522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255072781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414520 + ... + 1415406.

It is an arithmetic number, because the mean of its divisors is an integer number (86153760).

Almost surely, 2^1255072181 is an apocalyptic number.

1255072181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1255072181 is a deficient number, since it is larger than the sum of its proper divisors (123387979).

1255072181 is a wasteful number, since it uses less digits than its factorization.

1255072181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 1255072181 is about 35426.9979111976. The cubic root of 1255072181 is about 1078.6724030623.

The spelling of 1255072181 in words is "one billion, two hundred fifty-five million, seventy-two thousand, one hundred eighty-one".