55528354510225 has 9 divisors (see below), whose sum is σ = 68855205793467. Its totient is φ = 44422653801240.

The previous prime is 55528354510183. The next prime is 55528354510229. The reversal of 55528354510225 is 52201545382555.

The square root of 55528354510225 is 7451735.

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

It can be written as a sum of positive squares in only one way, i.e., 19990207623681 + 35538146886544 = 4471041^2 + 5961388^2 .

It is not a de Polignac number, because 55528354510225 - 2²³ = 55528346121617 is a prime.

It is a super-2 number, since 2×55528354510225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55528354510229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 36513502 + ... + 38003848.

Almost surely, 2^{55528354510225} is an apocalyptic number.

55528354510225 is the 7451735-th square number.

55528354510225 is the 3725868-th centered octagonal number.

It is an amenable number.

55528354510225 is a deficient number, since it is larger than the sum of its proper divisors (13326851283242).

55528354510225 is an frugal number, since it uses more digits than its factorization.

55528354510225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980704 (or 1490352 counting only the distinct ones).

The product of its (nonzero) digits is 12000000, while the sum is 52.

The spelling of 55528354510225 in words is "fifty-five trillion, five hundred twenty-eight billion, three hundred fifty-four million, five hundred ten thousand, two hundred twenty-five".