172425511 has 2 divisors, whose sum is σ = 172425512. Its totient is φ = 172425510.

The previous prime is 172425497. The next prime is 172425521. The reversal of 172425511 is 115524271.

It is a strong prime.

It is an emirp because it is prime and its reverse (115524271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172425511 is a prime.

It is a super-2 number, since 2×172425511² = 59461113687222242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172425511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172425521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86212755 + 86212756.

It is an arithmetic number, because the mean of its divisors is an integer number (86212756).

Almost surely, 2^172425511 is an apocalyptic number.

172425511 is a deficient number, since it is larger than the sum of its proper divisors (1).

172425511 is an equidigital number, since it uses as much as digits as its factorization.

172425511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 28.

The square root of 172425511 is about 13131.0894825982. The cubic root of 172425511 is about 556.5880023583.

Adding to 172425511 its reverse (115524271), we get a palindrome (287949782).

The spelling of 172425511 in words is "one hundred seventy-two million, four hundred twenty-five thousand, five hundred eleven".