28201325 has 12 divisors (see below), whose sum is σ = 35393568. Its totient is φ = 22287600.

The previous prime is 28201319. The next prime is 28201331. The reversal of 28201325 is 52310282.

It is an interprime number because it is at equal distance from previous prime (28201319) and next prime (28201331).

It is not a de Polignac number, because 28201325 - 2⁴ = 28201309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28201325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4721 + ... + 8870.

It is an arithmetic number, because the mean of its divisors is an integer number (2949464).

Almost surely, 2^28201325 is an apocalyptic number.

28201325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28201325 is a deficient number, since it is larger than the sum of its proper divisors (7192243).

28201325 is a wasteful number, since it uses less digits than its factorization.

28201325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684 (or 13679 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28201325 is about 5310.4919734428. The cubic root of 28201325 is about 304.3849470472.

The spelling of 28201325 in words is "twenty-eight million, two hundred one thousand, three hundred twenty-five".