28025929 has 2 divisors, whose sum is σ = 28025930. Its totient is φ = 28025928.

The previous prime is 28025927. The next prime is 28025947. The reversal of 28025929 is 92952082.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25775929 + 2250000 = 5077^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 28025929 - 2¹ = 28025927 is a prime.

Together with 28025927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28025927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14012964 + 14012965.

It is an arithmetic number, because the mean of its divisors is an integer number (14012965).

Almost surely, 2^28025929 is an apocalyptic number.

It is an amenable number.

28025929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28025929 is an equidigital number, since it uses as much as digits as its factorization.

28025929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28025929 is about 5293.9521153860. The cubic root of 28025929 is about 303.7526012637.

The spelling of 28025929 in words is "twenty-eight million, twenty-five thousand, nine hundred twenty-nine".