148225309 has 2 divisors, whose sum is σ = 148225310. Its totient is φ = 148225308.

The previous prime is 148225307. The next prime is 148225313. The reversal of 148225309 is 903522841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134050084 + 14175225 = 11578^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 148225309 - 2¹ = 148225307 is a prime.

Together with 148225307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148225307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74112654 + 74112655.

It is an arithmetic number, because the mean of its divisors is an integer number (74112655).

Almost surely, 2^148225309 is an apocalyptic number.

It is an amenable number.

148225309 is a deficient number, since it is larger than the sum of its proper divisors (1).

148225309 is an equidigital number, since it uses as much as digits as its factorization.

148225309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 148225309 is about 12174.7816818208. The cubic root of 148225309 is about 529.2255319584.

The spelling of 148225309 in words is "one hundred forty-eight million, two hundred twenty-five thousand, three hundred nine".