1255533006 has 128 divisors (see below), whose sum is σ = 3225277440. Its totient is φ = 317011968.

The previous prime is 1255532987. The next prime is 1255533007. The reversal of 1255533006 is 6003355521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255533007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1243830 + ... + 1244838.

It is an arithmetic number, because the mean of its divisors is an integer number (25197480).

Almost surely, 2^1255533006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255533006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612638720).

1255533006 is an abundant number, since it is smaller than the sum of its proper divisors (1969744434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255533006 is a wasteful number, since it uses less digits than its factorization.

1255533006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 1255533006 is about 35433.5011817912. The cubic root of 1255533006 is about 1078.8044056655.

Adding to 1255533006 its reverse (6003355521), we get a palindrome (7258888527).

The spelling of 1255533006 in words is "one billion, two hundred fifty-five million, five hundred thirty-three thousand, six".