1255151255 has 4 divisors (see below), whose sum is σ = 1506181512. Its totient is φ = 1004121000.

The previous prime is 1255151251. The next prime is 1255151257. The reversal of 1255151255 is 5521515521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5521515521 = 137 ⋅40303033.

It is not a de Polignac number, because 1255151255 - 2² = 1255151251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255151251) 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, 125515121 + ... + 125515130.

It is an arithmetic number, because the mean of its divisors is an integer number (376545378).

Almost surely, 2^1255151255 is an apocalyptic number.

1255151255 is a deficient number, since it is larger than the sum of its proper divisors (251030257).

1255151255 is an equidigital number, since it uses as much as digits as its factorization.

1255151255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251030256.

The product of its digits is 12500, while the sum is 32.

The square root of 1255151255 is about 35428.1139068960. The cubic root of 1255151255 is about 1078.6950559827.

Adding to 1255151255 its reverse (5521515521), we get a palindrome (6776666776).

The spelling of 1255151255 in words is "one billion, two hundred fifty-five million, one hundred fifty-one thousand, two hundred fifty-five".