1255641213 has 16 divisors (see below), whose sum is σ = 1721103296. Its totient is φ = 813680640.

The previous prime is 1255641119. The next prime is 1255641223. The reversal of 1255641213 is 3121465521.

It is not a de Polignac number, because 1255641213 - 2¹⁰ = 1255640189 is a prime.

It is a super-2 number, since 2×1255641213² = 3153269711568222738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255641223) 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, 123078 + ... + 132888.

It is an arithmetic number, because the mean of its divisors is an integer number (107568956).

Almost surely, 2^1255641213 is an apocalyptic number.

It is an amenable number.

1255641213 is a deficient number, since it is larger than the sum of its proper divisors (465462083).

1255641213 is a wasteful number, since it uses less digits than its factorization.

1255641213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11004.

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

The square root of 1255641213 is about 35435.0280513505. The cubic root of 1255641213 is about 1078.8353967092.

The spelling of 1255641213 in words is "one billion, two hundred fifty-five million, six hundred forty-one thousand, two hundred thirteen".