1255913455 has 4 divisors (see below), whose sum is σ = 1507096152. Its totient is φ = 1004730760.

The previous prime is 1255913453. The next prime is 1255913473. The reversal of 1255913455 is 5543195521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1255913455 - 2¹ = 1255913453 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255913453) 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, 125591341 + ... + 125591350.

It is an arithmetic number, because the mean of its divisors is an integer number (376774038).

Almost surely, 2^1255913455 is an apocalyptic number.

1255913455 is a deficient number, since it is larger than the sum of its proper divisors (251182697).

1255913455 is an equidigital number, since it uses as much as digits as its factorization.

1255913455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251182696.

The product of its digits is 135000, while the sum is 40.

The square root of 1255913455 is about 35438.8692680791. The cubic root of 1255913455 is about 1078.9133603502.

The spelling of 1255913455 in words is "one billion, two hundred fifty-five million, nine hundred thirteen thousand, four hundred fifty-five".