1255435020 has 144 divisors (see below), whose sum is σ = 4412116800. Its totient is φ = 283004928.

The previous prime is 1255435007. The next prime is 1255435031. The reversal of 1255435020 is 205345521.

It is a happy number.

1255435020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1255435020² = 3152234178884800800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85156 + ... + 98804.

It is an arithmetic number, because the mean of its divisors is an integer number (30639700).

Almost surely, 2^1255435020 is an apocalyptic number.

1255435020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255435020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2206058400).

1255435020 is an abundant number, since it is smaller than the sum of its proper divisors (3156681780).

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

1255435020 is a wasteful number, since it uses less digits than its factorization.

1255435020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744 (or 13739 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1255435020 is about 35432.1184802715. The cubic root of 1255435020 is about 1078.7763404326.

It can be divided in two parts, 12554 and 35020, that added together give a palindrome (47574).

The spelling of 1255435020 in words is "one billion, two hundred fifty-five million, four hundred thirty-five thousand, twenty".