1255145008 has 40 divisors (see below), whose sum is σ = 2636550000. Its totient is φ = 575395584.

The previous prime is 1255144981. The next prime is 1255145009. The reversal of 1255145008 is 8005415521.

It is a super-2 number, since 2×1255145008² = 3150777982214640128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255145009) 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, 10743 + ... + 51241.

It is an arithmetic number, because the mean of its divisors is an integer number (65913750).

Almost surely, 2^1255145008 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 1255145008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318275000).

1255145008 is an abundant number, since it is smaller than the sum of its proper divisors (1381404992).

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

1255145008 is a wasteful number, since it uses less digits than its factorization.

1255145008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40669 (or 40663 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 1255145008 is about 35428.0257423413. The cubic root of 1255145008 is about 1078.6932663925.

The spelling of 1255145008 in words is "one billion, two hundred fifty-five million, one hundred forty-five thousand, eight".