28810625029 has 2 divisors, whose sum is σ = 28810625030. Its totient is φ = 28810625028.

The previous prime is 28810625023. The next prime is 28810625057. The reversal of 28810625029 is 92052601882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27439922500 + 1370702529 = 165650^2 + 37023^2 .

It is a cyclic number.

It is not a de Polignac number, because 28810625029 - 2¹⁹ = 28810100741 is a prime.

It is a super-2 number, since 2×28810625029² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28810625023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405312514 + 14405312515.

It is an arithmetic number, because the mean of its divisors is an integer number (14405312515).

Almost surely, 2^28810625029 is an apocalyptic number.

It is an amenable number.

28810625029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28810625029 is an equidigital number, since it uses as much as digits as its factorization.

28810625029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 28810625029 in words is "twenty-eight billion, eight hundred ten million, six hundred twenty-five thousand, twenty-nine".