162625109 has 2 divisors, whose sum is σ = 162625110. Its totient is φ = 162625108.

The previous prime is 162625091. The next prime is 162625117. The reversal of 162625109 is 901526261.

It is a happy number.

Together with previous prime (162625091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156325009 + 6300100 = 12503^2 + 2510^2 .

It is a cyclic number.

It is not a de Polignac number, because 162625109 - 2²⁰ = 161576533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162625139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81312554 + 81312555.

It is an arithmetic number, because the mean of its divisors is an integer number (81312555).

Almost surely, 2^162625109 is an apocalyptic number.

It is an amenable number.

162625109 is a deficient number, since it is larger than the sum of its proper divisors (1).

162625109 is an equidigital number, since it uses as much as digits as its factorization.

162625109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 162625109 is about 12752.4550185445. The cubic root of 162625109 is about 545.8364497825.

The spelling of 162625109 in words is "one hundred sixty-two million, six hundred twenty-five thousand, one hundred nine".