28360244025 has 81 divisors (see below), whose sum is σ = 51769211949. Its totient is φ = 14841195840.

The previous prime is 28360243981. The next prime is 28360244027. The reversal of 28360244025 is 52044206382.

The square root of 28360244025 is 168405.

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

28360244025 is a `hidden beast` number, since 2 + 8 + 3 + 602 + 4 + 40 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 103978809 + 28256265216 = 10197^2 + 168096^2 .

It is not a de Polignac number, because 28360244025 - 2¹⁷ = 28360112953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28360244027) 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, 260185671 + ... + 260185779.

Almost surely, 2^28360244025 is an apocalyptic number.

28360244025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28360244025 is the 168405-th square number.

28360244025 is the 84203-rd centered octagonal number.

It is an amenable number.

28360244025 is a deficient number, since it is larger than the sum of its proper divisors (23408967924).

28360244025 is a wasteful number, since it uses less digits than its factorization.

28360244025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Multiplying 28360244025 by its sum of digits (36), we get a square (1020968784900 = 1010430²).

The spelling of 28360244025 in words is "twenty-eight billion, three hundred sixty million, two hundred forty-four thousand, twenty-five".