28502447025 has 48 divisors (see below), whose sum is σ = 52386091520. Its totient is φ = 13579315200.

The previous prime is 28502446997. The next prime is 28502447033. The reversal of 28502447025 is 52074420582.

It is not a de Polignac number, because 28502447025 - 2⁹ = 28502446513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 441280 + ... + 501729.

Almost surely, 2^28502447025 is an apocalyptic number.

28502447025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28502447025 is a deficient number, since it is larger than the sum of its proper divisors (23883644495).

28502447025 is a wasteful number, since it uses less digits than its factorization.

28502447025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943066 (or 943061 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 39.

The spelling of 28502447025 in words is "twenty-eight billion, five hundred two million, four hundred forty-seven thousand, twenty-five".