4255139840 has 384 divisors, whose sum is σ = 12737088000. Its totient is φ = 1332215808.

The previous prime is 4255139839. The next prime is 4255139879. The reversal of 4255139840 is 489315524.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47810516 + ... + 47810604.

It is an arithmetic number, because the mean of its divisors is an integer number (33169500).

Almost surely, 2^4255139840 is an apocalyptic number.

4255139840 is a gapful number since it is divisible by the number (40) 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 4255139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6368544000).

4255139840 is an abundant number, since it is smaller than the sum of its proper divisors (8481948160).

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

4255139840 is a wasteful number, since it uses less digits than its factorization.

4255139840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 4255139840 is about 65231.4329138951. The cubic root of 4255139840 is about 1620.4586213588.

The spelling of 4255139840 in words is "four billion, two hundred fifty-five million, one hundred thirty-nine thousand, eight hundred forty".