5651959438225 has 27 divisors (see below), whose sum is σ = 7184155699891. Its totient is φ = 4410905033600.

The previous prime is 5651959438187. The next prime is 5651959438253. The reversal of 5651959438225 is 5228349591565.

The square root of 5651959438225 is 2377385.

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 4304558516049 + 1347400922176 = 2074743^2 + 1160776^2 .

It is not a de Polignac number, because 5651959438225 - 2²⁹ = 5651422567313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 487358127 + ... + 487369723.

Almost surely, 2^{5651959438225} is an apocalyptic number.

5651959438225 is the 2377385-th square number.

5651959438225 is the 1188693-rd centered octagonal number.

It is an amenable number.

5651959438225 is a deficient number, since it is larger than the sum of its proper divisors (1532196261666).

5651959438225 is an frugal number, since it uses more digits than its factorization.

5651959438225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23286 (or 11643 counting only the distinct ones).

The product of its digits is 116640000, while the sum is 64.

Multiplying 5651959438225 by its sum of digits (64), we get a square (361725404046400 = 19019080²).

The spelling of 5651959438225 in words is "five trillion, six hundred fifty-one billion, nine hundred fifty-nine million, four hundred thirty-eight thousand, two hundred twenty-five".