28480740460225 has 9 divisors (see below), whose sum is σ = 35316151258467. Its totient is φ = 22784571021240.

The previous prime is 28480740460219. The next prime is 28480740460297. The reversal of 28480740460225 is 52206404708482.

The square root of 28480740460225 is 5336735.

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., 10253066565681 + 18227673894544 = 3202041^2 + 4269388^2 .

It is not a de Polignac number, because 28480740460225 - 2⁷ = 28480740460097 is a prime.

It is a super-2 number, since 2×28480740460225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26150002 + ... + 27217348.

Almost surely, 2^{28480740460225} is an apocalyptic number.

28480740460225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28480740460225 is the 5336735-th square number.

28480740460225 is the 2668368-th centered octagonal number.

It is an amenable number.

28480740460225 is a deficient number, since it is larger than the sum of its proper divisors (6835410798242).

28480740460225 is an frugal number, since it uses more digits than its factorization.

28480740460225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134704 (or 1067352 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 52.

The spelling of 28480740460225 in words is "twenty-eight trillion, four hundred eighty billion, seven hundred forty million, four hundred sixty thousand, two hundred twenty-five".