28547243425 has 6 divisors (see below), whose sum is σ = 35398581878. Its totient is φ = 22837794720.

The previous prime is 28547243423. The next prime is 28547243429. The reversal of 28547243425 is 52434274582.

It can be written as a sum of positive squares in 3 ways, for example, as 6940889344 + 21606354081 = 83312^2 + 146991^2 .

It is not a de Polignac number, because 28547243425 - 2¹ = 28547243423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28547243423) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 570944844 + ... + 570944893.

Almost surely, 2^28547243425 is an apocalyptic number.

28547243425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28547243425 is a deficient number, since it is larger than the sum of its proper divisors (6851338453).

28547243425 is a wasteful number, since it uses less digits than its factorization.

28547243425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141889747 (or 1141889742 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 46.

The spelling of 28547243425 in words is "twenty-eight billion, five hundred forty-seven million, two hundred forty-three thousand, four hundred twenty-five".