1255622808 has 128 divisors (see below), whose sum is σ = 3604953600. Its totient is φ = 363735680.

The previous prime is 1255622803. The next prime is 1255622857. The reversal of 1255622808 is 8082265521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255622803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733858 + ... + 735566.

It is an arithmetic number, because the mean of its divisors is an integer number (28163700).

Almost surely, 2^1255622808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255622808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802476800).

1255622808 is an abundant number, since it is smaller than the sum of its proper divisors (2349330792).

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

1255622808 is a wasteful number, since it uses less digits than its factorization.

1255622808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 1255622808 is about 35434.7683497437. The cubic root of 1255622808 is about 1078.8301255478.

The spelling of 1255622808 in words is "one billion, two hundred fifty-five million, six hundred twenty-two thousand, eight hundred eight".