28337625 has 24 divisors (see below), whose sum is σ = 51085320. Its totient is φ = 15112800.

The previous prime is 28337609. The next prime is 28337629. The reversal of 28337625 is 52673382.

28337625 is a `hidden beast` number, since 28 + 3 + 3 + 7 + 625 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 205209 + 28132416 = 453^2 + 5304^2 .

It is not a de Polignac number, because 28337625 - 2⁴ = 28337609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28337625.

It is not an unprimeable number, because it can be changed into a prime (28337629) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11470 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (2128555).

Almost surely, 2^28337625 is an apocalyptic number.

28337625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28337625 is a deficient number, since it is larger than the sum of its proper divisors (22747695).

28337625 is a wasteful number, since it uses less digits than its factorization.

28337625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25210 (or 25197 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 28337625 is about 5323.3095908467. The cubic root of 28337625 is about 304.8745340798.

The spelling of 28337625 in words is "twenty-eight million, three hundred thirty-seven thousand, six hundred twenty-five".