28125600073 has 2 divisors, whose sum is σ = 28125600074. Its totient is φ = 28125600072.

The previous prime is 28125600059. The next prime is 28125600077. The reversal of 28125600073 is 37000652182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14630595849 + 13495004224 = 120957^2 + 116168^2 .

It is a cyclic number.

It is not a de Polignac number, because 28125600073 - 2¹³ = 28125591881 is a prime.

It is not a weakly prime, because it can be changed into another prime (28125600077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14062800036 + 14062800037.

It is an arithmetic number, because the mean of its divisors is an integer number (14062800037).

Almost surely, 2^28125600073 is an apocalyptic number.

It is an amenable number.

28125600073 is a deficient number, since it is larger than the sum of its proper divisors (1).

28125600073 is an equidigital number, since it uses as much as digits as its factorization.

28125600073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 28125600073 in words is "twenty-eight billion, one hundred twenty-five million, six hundred thousand, seventy-three".