1255231437 has 4 divisors (see below), whose sum is σ = 1673641920. Its totient is φ = 836820956.

The previous prime is 1255231427. The next prime is 1255231457. The reversal of 1255231437 is 7341325521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255231437 - 2⁴ = 1255231421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255231398 and 1255231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255231427) 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 3 ways as a sum of consecutive naturals, for example, 209205237 + ... + 209205242.

It is an arithmetic number, because the mean of its divisors is an integer number (418410480).

Almost surely, 2^1255231437 is an apocalyptic number.

It is an amenable number.

1255231437 is a deficient number, since it is larger than the sum of its proper divisors (418410483).

1255231437 is an equidigital number, since it uses as much as digits as its factorization.

1255231437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418410482.

The product of its digits is 25200, while the sum is 33.

The square root of 1255231437 is about 35429.2455042441. The cubic root of 1255231437 is about 1078.7180253486.

Adding to 1255231437 its reverse (7341325521), we get a palindrome (8596556958).

The spelling of 1255231437 in words is "one billion, two hundred fifty-five million, two hundred thirty-one thousand, four hundred thirty-seven".