28372325 has 12 divisors (see below), whose sum is σ = 35276388. Its totient is φ = 22636800.

The previous prime is 28372321. The next prime is 28372387. The reversal of 28372325 is 52327382.

It can be written as a sum of positive squares in 6 ways, for example, as 988036 + 27384289 = 994^2 + 5233^2 .

It is not a de Polignac number, because 28372325 - 2² = 28372321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28372291 and 28372300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28372321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9515 + ... + 12135.

It is an arithmetic number, because the mean of its divisors is an integer number (2939699).

Almost surely, 2^28372325 is an apocalyptic number.

28372325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28372325 is a deficient number, since it is larger than the sum of its proper divisors (6904063).

28372325 is a wasteful number, since it uses less digits than its factorization.

28372325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064 (or 3059 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 28372325 is about 5326.5678443065. The cubic root of 28372325 is about 304.9989250164.

The spelling of 28372325 in words is "twenty-eight million, three hundred seventy-two thousand, three hundred twenty-five".