28153625 has 16 divisors (see below), whose sum is σ = 35592960. Its totient is φ = 22230000.

The previous prime is 28153589. The next prime is 28153639. The reversal of 28153625 is 52635182.

It is not a de Polignac number, because 28153625 - 2¹² = 28149529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28153591 and 28153600.

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, 8450 + ... + 11300.

It is an arithmetic number, because the mean of its divisors is an integer number (2224560).

Almost surely, 2^28153625 is an apocalyptic number.

28153625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28153625 is a deficient number, since it is larger than the sum of its proper divisors (7439335).

28153625 is an equidigital number, since it uses as much as digits as its factorization.

28153625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945 (or 2935 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 28153625 is about 5305.9989634375. The cubic root of 28153625 is about 304.2132369635.

The spelling of 28153625 in words is "twenty-eight million, one hundred fifty-three thousand, six hundred twenty-five".