1255435830 has 192 divisors, whose sum is σ = 3870996480. Its totient is φ = 278899200.

The previous prime is 1255435829. The next prime is 1255435843. The reversal of 1255435830 is 385345521.

1255435830 is a `hidden beast` number, since 1 + 25 + 54 + 3 + 583 + 0 = 666.

It is a super-2 number, since 2×1255435830² = 3152238246495577800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 582034 + ... + 584186.

It is an arithmetic number, because the mean of its divisors is an integer number (20161440).

Almost surely, 2^1255435830 is an apocalyptic number.

1255435830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255435830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935498240).

1255435830 is an abundant number, since it is smaller than the sum of its proper divisors (2615560650).

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

1255435830 is a wasteful number, since it uses less digits than its factorization.

1255435830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1255435830 is about 35432.1299105769. The cubic root of 1255435830 is about 1078.7765724395.

It can be divided in two parts, 12554 and 35830, that added together give a palindrome (48384).

The spelling of 1255435830 in words is "one billion, two hundred fifty-five million, four hundred thirty-five thousand, eight hundred thirty".