5251221325 has 12 divisors (see below), whose sum is σ = 7441731040. Its totient is φ = 3600837360.

The previous prime is 5251221319. The next prime is 5251221383. The reversal of 5251221325 is 5231221525.

It is not a de Polignac number, because 5251221325 - 2¹⁷ = 5251090253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5251221293 and 5251221302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15003315 + ... + 15003664.

Almost surely, 2^5251221325 is an apocalyptic number.

It is an amenable number.

5251221325 is a deficient number, since it is larger than the sum of its proper divisors (2190509715).

5251221325 is a wasteful number, since it uses less digits than its factorization.

5251221325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30006996 (or 30006991 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 5251221325 is about 72465.3111840417. The cubic root of 5251221325 is about 1738.1480852712.

It can be divided in two parts, 52512 and 21325, that added together give a palindrome (73837).

The spelling of 5251221325 in words is "five billion, two hundred fifty-one million, two hundred twenty-one thousand, three hundred twenty-five".