1255426555 has 8 divisors (see below), whose sum is σ = 1512241632. Its totient is φ = 1000521408.

The previous prime is 1255426553. The next prime is 1255426597. The reversal of 1255426555 is 5556245521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255426555 - 2¹ = 1255426553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255426553) 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 7 ways as a sum of consecutive naturals, for example, 476034 + ... + 478663.

It is an arithmetic number, because the mean of its divisors is an integer number (189030204).

Almost surely, 2^1255426555 is an apocalyptic number.

1255426555 is a deficient number, since it is larger than the sum of its proper divisors (256815077).

1255426555 is an equidigital number, since it uses as much as digits as its factorization.

1255426555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954965.

The product of its digits is 300000, while the sum is 40.

The square root of 1255426555 is about 35431.9990263039. Note that the first 3 decimals coincide. The cubic root of 1255426555 is about 1078.7739158116.

The spelling of 1255426555 in words is "one billion, two hundred fifty-five million, four hundred twenty-six thousand, five hundred fifty-five".