28125007 has 2 divisors, whose sum is σ = 28125008. Its totient is φ = 28125006.

The previous prime is 28125001. The next prime is 28125023. The reversal of 28125007 is 70052182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28125007 - 2²³ = 19736399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28125001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14062503 + 14062504.

It is an arithmetic number, because the mean of its divisors is an integer number (14062504).

Almost surely, 2^28125007 is an apocalyptic number.

28125007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28125007 is an equidigital number, since it uses as much as digits as its factorization.

28125007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 28125007 is about 5303.3015188654. The cubic root of 28125007 is about 304.1101250085.

Adding to 28125007 its reverse (70052182), we get a palindrome (98177189).

The spelling of 28125007 in words is "twenty-eight million, one hundred twenty-five thousand, seven".