28025503 has 16 divisors (see below), whose sum is σ = 32831136. Its totient is φ = 23639040.

The previous prime is 28025483. The next prime is 28025507. The reversal of 28025503 is 30552082.

It is a cyclic number.

It is not a de Polignac number, because 28025503 - 2²¹ = 25928351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12625 + ... + 14677.

It is an arithmetic number, because the mean of its divisors is an integer number (2051946).

Almost surely, 2^28025503 is an apocalyptic number.

28025503 is a deficient number, since it is larger than the sum of its proper divisors (4805633).

28025503 is a wasteful number, since it uses less digits than its factorization.

28025503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 28025503 is about 5293.9118806418. The cubic root of 28025503 is about 303.7510622214.

Adding to 28025503 its reverse (30552082), we get a palindrome (58577585).

The spelling of 28025503 in words is "twenty-eight million, twenty-five thousand, five hundred three".