5211581625 has 96 divisors (see below), whose sum is σ = 9987494400. Its totient is φ = 2605478400.

The previous prime is 5211581623. The next prime is 5211581657. The reversal of 5211581625 is 5261851125.

5211581625 is a `hidden beast` number, since 5 + 2 + 11 + 581 + 62 + 5 = 666.

It is not a de Polignac number, because 5211581625 - 2¹ = 5211581623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5211581625.

It is not an unprimeable number, because it can be changed into a prime (5211581623) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 7248016 + ... + 7248734.

It is an arithmetic number, because the mean of its divisors is an integer number (104036400).

Almost surely, 2^5211581625 is an apocalyptic number.

It is an amenable number.

5211581625 is a deficient number, since it is larger than the sum of its proper divisors (4775912775).

5211581625 is a wasteful number, since it uses less digits than its factorization.

5211581625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1123 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 5211581625 is about 72191.2849657076. The cubic root of 5211581625 is about 1733.7634693313.

The spelling of 5211581625 in words is "five billion, two hundred eleven million, five hundred eighty-one thousand, six hundred twenty-five".