30625508009 has 2 divisors, whose sum is σ = 30625508010. Its totient is φ = 30625508008.

The previous prime is 30625507999. The next prime is 30625508063. The reversal of 30625508009 is 90080552603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29850163984 + 775344025 = 172772^2 + 27845^2 .

It is an emirp because it is prime and its reverse (90080552603) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30625508009 is a prime.

It is not a weakly prime, because it can be changed into another prime (30625508509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15312754004 + 15312754005.

It is an arithmetic number, because the mean of its divisors is an integer number (15312754005).

Almost surely, 2^30625508009 is an apocalyptic number.

It is an amenable number.

30625508009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30625508009 is an equidigital number, since it uses as much as digits as its factorization.

30625508009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 30625508009 in words is "thirty billion, six hundred twenty-five million, five hundred eight thousand, nine".