1301225173 has 2 divisors, whose sum is σ = 1301225174. Its totient is φ = 1301225172.

The previous prime is 1301225147. The next prime is 1301225201. The reversal of 1301225173 is 3715221031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 932508369 + 368716804 = 30537^2 + 19202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301225173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1301225143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650612586 + 650612587.

It is an arithmetic number, because the mean of its divisors is an integer number (650612587).

Almost surely, 2^1301225173 is an apocalyptic number.

It is an amenable number.

1301225173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301225173 is an equidigital number, since it uses as much as digits as its factorization.

1301225173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 1301225173 is about 36072.4988460739. The cubic root of 1301225173 is about 1091.7356331258.

The spelling of 1301225173 in words is "one billion, three hundred one million, two hundred twenty-five thousand, one hundred seventy-three".