28301325 has 24 divisors (see below), whose sum is σ = 50392608. Its totient is φ = 13932480.

The previous prime is 28301309. The next prime is 28301359. The reversal of 28301325 is 52310382.

It is not a de Polignac number, because 28301325 - 2⁴ = 28301309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28301295 and 28301304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13539 + ... + 15488.

It is an arithmetic number, because the mean of its divisors is an integer number (2099692).

Almost surely, 2^28301325 is an apocalyptic number.

28301325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28301325 is a deficient number, since it is larger than the sum of its proper divisors (22091283).

28301325 is a wasteful number, since it uses less digits than its factorization.

28301325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29053 (or 29048 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 28301325 is about 5319.8989652060. The cubic root of 28301325 is about 304.7442988128.

The spelling of 28301325 in words is "twenty-eight million, three hundred one thousand, three hundred twenty-five".