28372025 has 12 divisors (see below), whose sum is σ = 38379984. Its totient is φ = 20634000.

The previous prime is 28372009. The next prime is 28372039. The reversal of 28372025 is 52027382.

28372025 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 28372025 - 2⁴ = 28372009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51311 + ... + 51860.

It is an arithmetic number, because the mean of its divisors is an integer number (3198332).

Almost surely, 2^28372025 is an apocalyptic number.

28372025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28372025 is a deficient number, since it is larger than the sum of its proper divisors (10007959).

28372025 is a wasteful number, since it uses less digits than its factorization.

28372025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103192 (or 103187 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 28372025 is about 5326.5396835094. The cubic root of 28372025 is about 304.9978500252.

The spelling of 28372025 in words is "twenty-eight million, three hundred seventy-two thousand, twenty-five".