28159125 has 32 divisors (see below), whose sum is σ = 47663616. Its totient is φ = 14760000.

The previous prime is 28159111. The next prime is 28159139. The reversal of 28159125 is 52195182.

It is an interprime number because it is at equal distance from previous prime (28159111) and next prime (28159139).

It is not a de Polignac number, because 28159125 - 2¹³ = 28150933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22260 + ... + 23490.

It is an arithmetic number, because the mean of its divisors is an integer number (1489488).

Almost surely, 2^28159125 is an apocalyptic number.

28159125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28159125 is a deficient number, since it is larger than the sum of its proper divisors (19504491).

28159125 is a wasteful number, since it uses less digits than its factorization.

28159125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310 (or 1300 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 28159125 is about 5306.5172194199. The cubic root of 28159125 is about 304.2330457076.

The spelling of 28159125 in words is "twenty-eight million, one hundred fifty-nine thousand, one hundred twenty-five".