1255220265413 has 4 divisors (see below), whose sum is σ = 1255326841440. Its totient is φ = 1255113689388.

The previous prime is 1255220265391. The next prime is 1255220265419. The reversal of 1255220265413 is 3145620225521.

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 1255220265413 - 2²⁴ = 1255203488197 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 (1255220265419) 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, 53270345 + ... + 53293902.

It is an arithmetic number, because the mean of its divisors is an integer number (313831710360).

Almost surely, 2^{1255220265413} is an apocalyptic number.

It is an amenable number.

1255220265413 is a deficient number, since it is larger than the sum of its proper divisors (106576027).

1255220265413 is a wasteful number, since it uses less digits than its factorization.

1255220265413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106576026.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 1255220265413 in words is "one trillion, two hundred fifty-five billion, two hundred twenty million, two hundred sixty-five thousand, four hundred thirteen".