5251255040 has 144 divisors (see below), whose sum is σ = 13088386080. Its totient is φ = 2016215040.

The previous prime is 5251255019. The next prime is 5251255063. The reversal of 5251255040 is 405521525.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 5251254994 and 5251255012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8945627 + ... + 8946213.

It is an arithmetic number, because the mean of its divisors is an integer number (90891570).

Almost surely, 2^5251255040 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 5251255040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6544193040).

5251255040 is an abundant number, since it is smaller than the sum of its proper divisors (7837131040).

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

5251255040 is a wasteful number, since it uses less digits than its factorization.

5251255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 5251255040 is about 72465.5438122146. The cubic root of 5251255040 is about 1738.1518051383.

Adding to 5251255040 its reverse (405521525), we get a palindrome (5656776565).

The spelling of 5251255040 in words is "five billion, two hundred fifty-one million, two hundred fifty-five thousand, forty".