1255504231 has 4 divisors (see below), whose sum is σ = 1270630872. Its totient is φ = 1240377592.

The previous prime is 1255504207. The next prime is 1255504273. The reversal of 1255504231 is 1324055521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1324055521 = 59 ⋅22441619.

It is a cyclic number.

It is not a de Polignac number, because 1255504231 - 2¹⁵ = 1255471463 is a prime.

It is a super-2 number, since 2×1255504231² = 3152581748117802722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255504231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255504331) 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, 7563196 + ... + 7563361.

It is an arithmetic number, because the mean of its divisors is an integer number (317657718).

Almost surely, 2^1255504231 is an apocalyptic number.

1255504231 is a deficient number, since it is larger than the sum of its proper divisors (15126641).

1255504231 is an equidigital number, since it uses as much as digits as its factorization.

1255504231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15126640.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1255504231 is about 35433.0951371737. The cubic root of 1255504231 is about 1078.7961640571.

Adding to 1255504231 its reverse (1324055521), we get a palindrome (2579559752).

The spelling of 1255504231 in words is "one billion, two hundred fifty-five million, five hundred four thousand, two hundred thirty-one".