28433424525 has 24 divisors (see below), whose sum is σ = 51283559904. Its totient is φ = 13785902400.

The previous prime is 28433424497. The next prime is 28433424559. The reversal of 28433424525 is 52542433482.

It is a happy number.

It is not a de Polignac number, because 28433424525 - 2¹¹ = 28433422477 is a prime.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 17231554 + ... + 17233203.

It is an arithmetic number, because the mean of its divisors is an integer number (2136814996).

Almost surely, 2^28433424525 is an apocalyptic number.

28433424525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28433424525 is a deficient number, since it is larger than the sum of its proper divisors (22850135379).

28433424525 is a wasteful number, since it uses less digits than its factorization.

28433424525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34464781 (or 34464776 counting only the distinct ones).

The product of its digits is 921600, while the sum is 42.

The spelling of 28433424525 in words is "twenty-eight billion, four hundred thirty-three million, four hundred twenty-four thousand, five hundred twenty-five".