1255423161 has 8 divisors (see below), whose sum is σ = 1674613024. Its totient is φ = 836591040.

The previous prime is 1255423159. The next prime is 1255423163. The reversal of 1255423161 is 1613245521.

1255423161 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1255423159) and next prime (1255423163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255423161 - 2¹ = 1255423159 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1255423163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81136 + ... + 95361.

It is an arithmetic number, because the mean of its divisors is an integer number (209326628).

Almost surely, 2^1255423161 is an apocalyptic number.

It is an amenable number.

1255423161 is a deficient number, since it is larger than the sum of its proper divisors (419189863).

1255423161 is a wasteful number, since it uses less digits than its factorization.

1255423161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178871.

The product of its digits is 7200, while the sum is 30.

The square root of 1255423161 is about 35431.9511317116. The cubic root of 1255423161 is about 1078.7729436687.

Adding to 1255423161 its reverse (1613245521), we get a palindrome (2868668682).

The spelling of 1255423161 in words is "one billion, two hundred fifty-five million, four hundred twenty-three thousand, one hundred sixty-one".