5531640625 has 81 divisors (see below), whose sum is σ = 8544429219. Its totient is φ = 3570000000.

The previous prime is 5531640571. The next prime is 5531640629. The reversal of 5531640625 is 5260461355.

The square root of 5531640625 is 74375.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1333637361 + 4198003264 = 36519^2 + 64792^2 .

It is not a de Polignac number, because 5531640625 - 2⁹ = 5531640113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5531640629) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 325390617 + ... + 325390633.

Almost surely, 2^5531640625 is an apocalyptic number.

5531640625 is the 74375-th square number.

5531640625 is the 37188-th centered octagonal number.

It is an amenable number.

5531640625 is a deficient number, since it is larger than the sum of its proper divisors (3012788594).

5531640625 is an frugal number, since it uses more digits than its factorization.

5531640625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The cubic root of 5531640625 is about 1768.5526194109.

The spelling of 5531640625 in words is "five billion, five hundred thirty-one million, six hundred forty thousand, six hundred twenty-five".