1255426559 has 8 divisors (see below), whose sum is σ = 1300840560. Its totient is φ = 1210154176.

The previous prime is 1255426553. The next prime is 1255426597. The reversal of 1255426559 is 9556245521.

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 1255426559 - 2⁸ = 1255426303 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 (1255426553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17189 + ... + 52974.

It is an arithmetic number, because the mean of its divisors is an integer number (162605070).

Almost surely, 2^1255426559 is an apocalyptic number.

1255426559 is a deficient number, since it is larger than the sum of its proper divisors (45414001).

1255426559 is an equidigital number, since it uses as much as digits as its factorization.

1255426559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70809.

The product of its digits is 540000, while the sum is 44.

The square root of 1255426559 is about 35431.9990827500. Note that the first 3 decimals coincide. The cubic root of 1255426559 is about 1078.7739169573.

The spelling of 1255426559 in words is "one billion, two hundred fifty-five million, four hundred twenty-six thousand, five hundred fifty-nine".