5251265250 has 128 divisors (see below), whose sum is σ = 16341571584. Its totient is φ = 1091160000.

The previous prime is 5251265249. The next prime is 5251265267. The reversal of 5251265250 is 525621525.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12285 + ... + 103215.

It is an arithmetic number, because the mean of its divisors is an integer number (127668528).

Almost surely, 2^5251265250 is an apocalyptic number.

5251265250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5251265250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8170785792).

5251265250 is an abundant number, since it is smaller than the sum of its proper divisors (11090306334).

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

5251265250 is a wasteful number, since it uses less digits than its factorization.

5251265250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90969 (or 90959 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 5251265250 is about 72465.6142594541. The cubic root of 5251265250 is about 1738.1529316321.

Adding to 5251265250 its reverse (525621525), we get a palindrome (5776886775).

The spelling of 5251265250 in words is "five billion, two hundred fifty-one million, two hundred sixty-five thousand, two hundred fifty".