1255235143213 has 4 divisors (see below), whose sum is σ = 1257262987360. Its totient is φ = 1253207299068.

The previous prime is 1255235143181. The next prime is 1255235143231. The reversal of 1255235143213 is 3123415325521.

It is a happy number.

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 1255235143213 - 2⁵ = 1255235143181 is a prime.

It is a super-3 number, since 3×1255235143213³ (a number of 37 digits) contains 333 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 (1255235141213) 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, 1013921145 + ... + 1013922382.

It is an arithmetic number, because the mean of its divisors is an integer number (314315746840).

Almost surely, 2^{1255235143213} is an apocalyptic number.

It is an amenable number.

1255235143213 is a deficient number, since it is larger than the sum of its proper divisors (2027844147).

1255235143213 is an equidigital number, since it uses as much as digits as its factorization.

1255235143213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027844146.

The product of its digits is 108000, while the sum is 37.

The spelling of 1255235143213 in words is "one trillion, two hundred fifty-five billion, two hundred thirty-five million, one hundred forty-three thousand, two hundred thirteen".