30125197 has 2 divisors, whose sum is σ = 30125198. Its totient is φ = 30125196.

The previous prime is 30125191. The next prime is 30125213. The reversal of 30125197 is 79152103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28419561 + 1705636 = 5331^2 + 1306^2 .

It is an emirp because it is prime and its reverse (79152103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30125197 is a prime.

It is a super-3 number, since 3×30125197³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30125191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15062598 + 15062599.

It is an arithmetic number, because the mean of its divisors is an integer number (15062599).

Almost surely, 2^30125197 is an apocalyptic number.

It is an amenable number.

30125197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30125197 is an equidigital number, since it uses as much as digits as its factorization.

30125197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 30125197 is about 5488.6425462039. The cubic root of 30125197 is about 311.1548909148.

The spelling of 30125197 in words is "thirty million, one hundred twenty-five thousand, one hundred ninety-seven".