28051625 has 16 divisors (see below), whose sum is σ = 40010880. Its totient is φ = 19234800.

The previous prime is 28051607. The next prime is 28051691. The reversal of 28051625 is 52615082.

It is not a de Polignac number, because 28051625 - 2⁸ = 28051369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15155 + ... + 16904.

It is an arithmetic number, because the mean of its divisors is an integer number (2500680).

Almost surely, 2^28051625 is an apocalyptic number.

28051625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28051625 is a deficient number, since it is larger than the sum of its proper divisors (11959255).

28051625 is an equidigital number, since it uses as much as digits as its factorization.

28051625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32081 (or 32071 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 28051625 is about 5296.3784796784. The cubic root of 28051625 is about 303.8454063063.

The spelling of 28051625 in words is "twenty-eight million, fifty-one thousand, six hundred twenty-five".