28456325 has 24 divisors (see below), whose sum is σ = 36598848. Its totient is φ = 21934080.

The previous prime is 28456321. The next prime is 28456331. The reversal of 28456325 is 52365482.

It is not a de Polignac number, because 28456325 - 2² = 28456321 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110597 + ... + 110853.

It is an arithmetic number, because the mean of its divisors is an integer number (1524952).

Almost surely, 2^28456325 is an apocalyptic number.

28456325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28456325 is a deficient number, since it is larger than the sum of its proper divisors (8142523).

28456325 is a wasteful number, since it uses less digits than its factorization.

28456325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 408 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

The square root of 28456325 is about 5334.4470191389. The cubic root of 28456325 is about 305.2996249355.

The spelling of 28456325 in words is "twenty-eight million, four hundred fifty-six thousand, three hundred twenty-five".